A 43.9-g piece of copper (C_Cu= 0.385 J/gC) at 135.0C is plunged into 254 g of water at 39.0C. D) only products are present
A. increase product [Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling point of 80.1 C] This buffer has a pH = 4.74. You can get ready really for the Class 12 Chemistry Exam as they assist you with being comfortable with the sort of inquiries showing up in the test.
E. 48.1 J, [A 100-W lightbulb is placed in a cylinder equipped with a moveable piston. E. All of the above are true. Hungary, (+ Write an equilibrium constant expression b. E. 8.89. [When 1 mol of a fuel is burned at constant pressure, it produces 3455 kJ of heat and does 12 kJ of work] What is the stoichiometric coefficient of Xx(s) in the balanced reaction equation for that cell ? Q: If the aluminum block is initially at 25 C, what is the final temperature of the block after the evaporation of the alcohol? C. The reaction mixture will contain equal concentrations of A and B. 3. For both acid and base, 'strong' means fully dissociated. [Consider these two acids and their Ka values: How can I download the CBSE MCQs in PDF Format for free? (Pg.5) (c) Isobaric process:- An isobaric process is In a homogeneous equilibrium, all the defined as one in which the pressure of the reactants and products are in the same phase. B. CP is always at a higher temperature relative to TP. B. Afghanistan, (+ 2NO (g) + O2 (g) 2NO2 (g)
Part A: Use the wattage of the lightbulb and the time it is on to calculate the heat transferred, q, in joules. D. 173 g Catalysts have no effect on equilibrium situations. E) Q is the same as Keq when a reaction is at equilibrium. \mathrm{Cu}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \rightleftharpoons \mathrm{Cu}(\mathrm{s}) & \text { voltage }=+0.34 \mathrm{~V} \\ B. B. Cambodia, (+ 9.64 If 35.8 mg of the compound is dissolved in enough water to make 175 mL of solution at 25C, what is the osmotic pressure of the resulting solution? C. 0.0010 D. 1.2 A. What is the osmotic pressure of a solution made by dissolving 45.0 g of glucose, C6H12O6, in enough water to form 225.0 mL of solution at 36.0 C ? 45) For H2O, Hfus = 6.01 kJ/mol, and Hvap = 40.67 kJ/mol. Compute the pH at 25C after 3 mL of the base has been added. A. ethanol Br2 (g) + Cl2 (g) 2BrCl (g)
D) 5.66 10-3
United States, (+ 20) Identify the change that will always shift the equilibrium to the right. Understudies who are concentrating in CBSE, ICSE, IGCSE schools as well as different State Board schools. [Nickel and aluminum electrodes are used to build a galvanic cell. To have a decent groundwork for your impending board test then you should endeavor these internet based tests for Chemistry. 0.13 M C. 4.3 M D. 0.039 M 49) You'll get a detailed solution from a subject matter expert that helps you learn core concepts.
C) 7.07
2NO(g)N2(g)+O2(g)Kp=2.11030 The equilibrium constant is given for one of the reactions below. A. +25.5 kJ B) N2O4 (g) 2NO2 (g)
Propane has a normal boiling point of 42.0C and a heat of vaporization (Hvap) of 19.04 kJ/mol. H2 ( g) + I2 ( g) 2HI ( g) A mixture of H2 and I2 was maintained at 740 K until the system reached equilibrium. Nigeria, (+ Which statement is true of an endothermic reaction? Rating: 5 / 5 stars. E) [F-] / [HF], 19) The expression for for the reaction below is ________. E. 0.169 M, From Midterm Exam 2: D. 39.5 C, In general, which of the following types of force/interaction is responsible for the existence of the condensed phases of matter? Part B: Calculate the boiling point of the solution above. Sn(s)|Sn2+(aq)NO(g)|NO3(aq),H+(aq)|Pt(s), 3Sn(s)+2NO3(aq)+8H+(aq)3Sn2+(aq)+2NO(g)+4H2O(l), [Use tabulated half-cell potentials to calculate Grxn for each of the following reactions at 25 C] Q6. B. Determine the value of the missing equilibrium constant. C. 1.28 A. Understudies who are getting ready for Online/Offline Tests/Contests in Chemistry for class 12. Consider the following reactions and their respective equilibrium constants: is first order in CH3NC. 7.2 10-5 M Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature.] D) at low temperature and high pressure
After 203 s the concentration of A had fallen to one fifth of the initial value. where n represents the stoichiometric coefficients] The value of pH is somewhat higher than 6.65. D. C2H3O2-/HC2H3O2 100 The NCERT Solutions for the questions are present on our site or you can find them online too. y+4y+5y=26e3t,y0=1,y0=5. Bahrain, (+ B) increase the equilibrium constant so that products are favored
Q: If the initial concentration of SO2Cl2 is 1.00 M, how long will it take for the concentration to decrease to 0.72 M ? 50.0 g Cu, CCu = 0.385 J/gC Dynamic equilibrium in a chemical reaction is the condition in which the rate of the forward reaction is lower than the rate of the reverse reaction. 33) A2B(g) + B(g) A2B2(g) Kc = 16.4 A second-order reaction of the type 2A P was carried out in a solution with the initial concentration of A being [A]0 = 1.5 mol L-1. Check all that apply. Ukraine, (+ PART A: D. 13.16 Pakistan, (+ H2(g) + Br2(g) 2 HBr(g) Kc = 3.8 104 2.35 x 104 kJ/mole Chemistry MCQ For Class 12 Chapter savvy with answers Online Test is a sort of Mock Test that will assist you with taking care of the few issues of Std twelfth NCERT Chemistry Books. Q8. A. D. CH3OH, D. CH3OH A. Q: How long will it take for 15% of the U238 atoms in a sample of U238 to decay? A compound is found to have a molar mass of 598 g/mol. 1-propanol From Midterm Exam 2: E. -117 kJ. For the comforts of the understudies we have furnished the part savvy Chemistry MCQs with replies here. 968) Hrxn= npHf(products) nrHf(reactants) - A gas can be converted into a liquid by increasing the pressure of a gas sample. A) [SO3] / [SO2][O2]
Swaziland, (+ system remains constant during its change from Examples:- (i) H2(g) + I2(g) 2HI(g) the initial to final state. A) 5.4 10-13
D) [CO2][H2O] / [H+][HCO3-]
- A liquid can be converted to a gas by heating. 34) C-O 360 1 Answer Ernest Z. Dec 11, 2017 The equilibrium concentrations are: [H2] = [I2] = 0.681 mol/L [HI] = 2.362 mol/L Explanation: The balanced equation is H2 + I2 2HI Now, we can set up an ICE table. South Korea, (+ New Zealand, (+ E. The value of pH is 2.13. CH4(g)+Cl2(g)CH3Cl(g)+HCl(g), H=99.60 kJ By using Laplace transforms, solve the following differential equations We hope the given CBSE MCQs for Class 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12th all subjects will help you. What is the value of Keq for the following reaction? 971) A. O=O 498 In a cell defined by Xs(s) | Xs2+(aq) || Xo3+(aq) | Xo(s), what amount of charge q needs to run through the cell to add 0.25 g of Xo(s) with atomic mass 107 g mol-1 to the electrode. It permits everybody to download CBSE Class 12 Chemistry Chapter-wise MCQs question keep money with addresses in free pdf organization and practice them for additional investigations. Tajikistan, (+ What would the molar concentration of the tree sap have to be to achieve this pressure on a day when the temperature is 31 C ? Isotonic saline solution, which has the same osomotic pressure as blood, can be prepared by dissolving 0.923 g of NaCl in enough water to produce 100. mL of solution. Q: How long will it take for the concentration of SO2Cl2 to decrease to 25% of its initial concentration? H2(g)+I2(g)2HI(g) Which of the following statement is/are true? The most easily measurable form of energy comes in the form of heat, or enthalpy. C) The equilibrium partial pressure of Br2 will be greater than 1.00 atm. Terms T&C. C. Dynamic equilibrium in a chemical reaction is the condition in which the rate of the forward reaction equals the rate of the reverse reaction. C. raising the temperature Since there is not a viable alternative for it. [Acid rain over the Great Lakes has a pH of about 4.6.] 46) C. +115 kJ 968) C) K does not depend on the concentrations or partial pressures of reaction components. A) [HF][H2O] / [H3O+][F-]
D. - 1.23 x 103 kJ/mole. 224) (look up carbon dioxide phase diagram), Which of the following compounds is most soluble in hexane (CH3CH2CH2CH2CH2CH2CH3)? 46) From Midterm Exam 2: CHM152 Equilibrium Worksheet Key 1 Equilibrium Worksheet Key 1.
France, (+ B) 1.9 10-14
2) Which one of the following is true concerning the Haber process? Afghanistan, (+ Ukraine, (+ [A solution contains a mixture of pentane and hexane at room temperature. If you find. 1.9 10-4 M The vapor pressure of a certain sample has been measured at two different temperatures and the results are P1 = 160 kPa at T1 = 240 K and P2 = 840 kPa at T2 = 270 K. Determine the molar vaporization enthalpy, Hvap, from these results. Which change will shift the equilibrium to the left? Decreased? 20) Hydrogen and iodine react to form hydrogen iodide, like this: H_2 (g) + I_2 (g) rightarrow 2 HI (g) Also, a chemist finds that at a certain temperature the equilibrium mixture of hydrogen, iodine, and hydrogen iodide has the following composition: Calculate the value of the equilibrium constant K_p for this reaction. A) at high temperature and high pressure
C) 1 / [(NH4)2Se]
995) A) 100
2 CH3OH(l) + 3 O2(g) 2 CO2(g) + 4 H2O(g) E. none of the above. A. viscosity South Korea, (+ C) [H3O+][F-] / [HF][H2O]
49) 100.0C Dynamic equilibrium in a chemical reaction is the condition in which the rate of the forward reaction is higher than the rate of the reverse reaction. E. none of the above, What is the equilibrium constant for the reaction B(g)1/2A(g)? 7) Afghanistan, (+ E) all of the above, 32) Consider the following reaction at equilibrium:
92) Tajikistan, (+ C. K>1 B) [CO2] / [H+][HCO3-]
D) [SO3]2 / [SO2]2[O2]2
A -253 C. N(g) Ag+(aq)+eAg(s)Co2+(aq)+2eCo(s)Cu2+(aq)+2eCu(s)Pb2+(aq)+2ePb(s)Zn2+(aq)+2eZn(s)voltage=+0.80Vvoltage=0.28Vvoltage=+0.34Vvoltage=0.13Vvoltage=0.76V. D. 32.2 kJ mol-1 A) N2 (g) + 3H2 (g) 2NH3 (g)
-1282 kJ A. A) 5.71x104 B) 0.100 C) 1.75 x10-7 D) 1.79 x10-6 E) 5.71 x106 19) The equilibrium constant (K p) at 721 K for the reaction 2HI(g) H 2 (g) + I 2 (g) is 0.0198. Consider the chemical equation and equilibrium constant at 25C: Consider the first-order decomposition of compound A according to 960) \mathrm{Ag}^{+}(\mathrm{aq})+\mathrm{e}^{-} \rightleftharpoons \mathrm{Ag}(\mathrm{s}) & \text { voltage }=+0.80 \mathrm{~V} \\ 2075 37.5 g United Kingdom, (+ VITEEE 2007: For the reaction H 2( g )+ I 2( g ) longrightarrow 2 HI ( g ), the equilibrium constant Kp changes with (A) total pressure (B) catalyst (VITEEE 2007: For the reaction H 2( g )+ I 2( g ) longrightarrow 2 HI ( g ), the equilibrium constant Kp changes with (A) total pressure (B) catalyst (Tardigrade - CET NEET JEE Exam App.
B) reactants predominate
Given: E) only reactants are present, 24) The equilibrium constant for the gas phase reaction
CBSE MCQs for all the classes and subjects are provided online or you can view them on our site. C. Dynamic equilibrium in a chemical reaction is the condition in which the rate of the forward reaction equals the rate of the reverse reaction. If you have any queries regarding The Solid State CBSE Class 12 Chemistry MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon. Understudies who are planning for State board assessments in Chemistry like PUC, Intermediate tests, and so on. Le Chtelier's principle predicts that the equilibrium partial pressure of CO (g) can be maximized by carrying out the reaction ________. C) slow the reverse reaction only
992) 3) Which one of the following will change the value of an equilibrium constant? 0.183 H2 (g) + I2 (g) 2HI (g) What is the value of Keq for the following reaction? What is the Kw of pure water at 50.0C, if the pH is 6.630? Thus, by adding a small amount of I2, neither side would be favored since the constant shows that little I2 would be produced. 25) At 400 K, the equilibrium constant for the reaction
B. N2(g) + O2(g) 2 NO(g) Hrxn = +183 kJ Which one statement regarding the first-order reaction B. hydrogen bonding 2COF2(g)CO2(g)+CF4(g), Kc=6.30 52) B) The equilibrium partial pressure of BrCl (g) will be 4.00 atm. Moreover, access the Chapter Wise MCQs of Class 12 Chemistry and set up the points and subtopics in it. A. Covalent bond forces A. 27) How is the reaction quotient used to determine whether a system is at equilibrium? Write the overall balanced equation for the reaction. A reversible reaction can proceed in both the forward and backward directions. A. F2 Belgium, (+ Consider an acetate buffer that is a mixture of 0.20 M acetic acid and 0.20 M sodium acetate. 0.556 D. If the temperature is raised, then the reverse reaction is favored. C. CF4 Xs3+ + 3 e- Xs(s) : E = -0.55 V Q: What is the percent ionization of ammonia at this concentration? Yes, our website is the one-stop search for all CBSE Board Examination related sources like questions papers, syllabus, exam pattern, sample papers, and Multiple choice questions papers. 2CH3NO2(l)+3/2O2(g)2CO2(g)+3H2O(l)+N2(g) Hrxn = -1418 kJ] 41) Sweden, (+ Q: What is the mole fraction of hexane? 2 NO (g) N2 (g) + O2 (g). Bangladesh, (+ D) only products are present
1 Answer +1 vote answered Dec 12, 2019 by Kajal01 (25.8k points) Answer (c) amount of H2 and I2 Prev Question Next Question Mexico, (+ A) products predominate
C. 1.94 Denmark, (+ 2HI (g) H2 (g) + I2 (g)
B. From Midterm Exam 2: Mauritius, (+ CBSE MCQs lay a stronger foundation of concepts in students that can be useful for them in their later stages to prepare for any competitive exams. Is there any website that covers MCQ Questions for CBSE Class 6 to 12? 348) Beside the PDF archive of Chemistry we are giving the electronic test which will help in everyday act of the Mathematical Problems. 41) When the equilibrium constant is written with the gases in terms of partial pressure, the equilibrium constant is written as the symbol K_\text p K p. The subscript p stands for penguins. 977) E) [SO3] / [SO2][O2]2, 16) Which of the following expressions is the correct equilibrium-constant expression for the reaction below? A) The equilibrium partial pressures of Br2, Cl2, and BrCl will be the same as the initial values. for the following reaction at 25C: HI(g)12H2(g)+12I2(g), The given reaction is Understudies who are planning for serious assessments like NTSE, Olympiad, and so forth for class 12. Part B: If the butane is warmed to 25 C, how much liquid butane is present? Which statement describes best the pH of a 0.010 M solution of this acid. Portugal, (+ E. There is not enough information to calculate the Kw. 44) Hydrogen iodide undergoes decomposition according to the equation 2HI (g) H2 (g) + I2 (g) The equilibrium constant Kp at 500 K for this equilibrium is 0.060. C) N2 (g) + 2O2 (g) 2NO2 (g)
25.0 g Ag, CAg = 0.235 J/gC A.1.89 103 J +206 kJ B. A. 17.9 A homogeneous equilibrium reaction exists when all the components of the reaction are in the same phase (i.e., gas, liquid, solid, aqueous). Additionally, the Online Multiple decision questions will give you certainty to show up in the board test and take care of the complicated issues quicker. The reaction mixture will contain [A]=1.0M and [B]=0.1M. Equilibrium constant Kp is equal to the partial pressure of products divided by partial pressure of reactants and the partial pressure are raised with some power which is equal to the coefficient of the substance in balanced equation. -333 kJ D. increase reactant This reaction has been started at time t = 0 with an initial concentration of [A]0 = 0.3 M, with a half-life t1/2 = 131 s. What concentration of A is present at time t = 258 s ? Understudies who are planning for different school tests, for example, unit-tests, term-tests, semester tests, half-yearly and yearly tests and assessments on Chemistry-Class 12. A. 4CuO (s) + CH4 (g) CO2 (g) + 4Cu (s) + 2H2O (g), 20) The equilibrium-constant expression for the reaction
a. d. Which metal ion in the list is the easiest to reduce? 351) 233) Careful quan titative dehydration experiments [17] show that at 173 K each protonated form o f the anion has a distinct resonance, see Figure 8 . B) [SO2] / [SO3]
India, (+ 234) Poland, (+ A. [Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute] (iii) The total pressure increases as the system approaches equilibrium. Q2. Hungary, (+ 27) Q: What is the [H3O+] in pure water at body temperature? Q: Find the value of the [H3O+] of rain over the West Coast that has a pH of 5.5. CBSE Textbooks can be great to guide you for any exam and has detailed solutions for the questions. 234) A. C. 0.322 M A. A 20.0kg20.0 \mathrm{~kg}20.0kg crate sits at rest at the bottom of a 15.0m15.0 \mathrm{~m}15.0m long ramp that is inclined at 34.034.0^{\circ}34.0 above the horizontal.
34) D) 2 SO3 (g) 2 SO2 (g) + O2 (g)
The standard reduction potential for the nickel(II) ion is 0.26 V and that of the aluminum(III) ion is 1.66 V] View Answer Consider the following reaction: 2SO (g) + O_2 (g) to 2SO_2 (g) K_p = 36.4 at 298 K. In a reaction mixture at equilibrium, the partial pressure of SO is 0.46 atm and that of SO_2 is. Bangladesh, (+ When a reactio. The pH of a solution of boric acid, H3BO3(aq), with Ka = 5.410-10 has been found to have a value of 5.02. Swaziland, (+ 2HI(g); Equilibrium is the exact balancing of two opposing processes. Calculate the change in pH after 15 mL of a 0.4 M solution of a strong base had been added to 100 mL of this buffer. 32) B. A) N2O4 (g) 2NO2 (g)
90) 2CO2 (g) 2CO (g) + O2 (g) H = -514 kJ
The reaction mixture will contain [A]=0.1M and [B]=1.0M. Which statement is true at equilibrium? y+4y+5y=26e3t,y0=1,y0=5.y^{^{\prime \prime }}+4y^{^{\prime . The total volume will change to half of the initial value at 1 bar. Cambodia, (+ A. CO2 (s) + H2O (l) H+ (aq) + HCO3- (aq)
2 HD(g) H2(g) + D2(g) Kc = 0.28 Chemistry MCQ For Class 12 Chapter astute with answers PDF Download records are given here free of charge of cost. B. C. 2.13 10-14 If only COF2 is present initially at a concentration of 2.00 M, what concentration of COF2 remains at equilibrium? H2 (g) + I2 (g) 2HI (g)
Determine the value of the missing equilibrium constant. Hydrogen bonding is a strong intermolecular force that makes this substance a liquid at room temperature), Identify the term used to describe the ability of a liquid to flow against gravity up a narrow tube. [Ammonia, NH3, is a weak base with a Kb value of 1.8105.] 351) We hope the given NCERT MCQ Questions for Class 12 Chemistry PDF Free Download will definitely yield fruitful results.
These numerous decision inquiries for Chemistry Class 12 will assist with further developing logical and complex issue unraveling abilities. Here's an example. C. 2.8 10-5 M [The vapor above an aqueous solution contains 17.9 mg water per liter at 25 C] - The vapor pressure of a liquid increases with increasing temperature. . 973) C. -2.97C A. 2 NO(g) + O2(g) ' 2 NO2(g) Determine the cell notation for the redox reaction given below. 2HI(g) I, M 1.00 1.00 0 C, M -x -x +2x . 960) France, (+ B -423 A 250 mL sealed flask contains 0.65 g of butane at 22C.] N2 (g) + 3H2 (g) 2NH3 (g)
By this, you can dominate CBSE Class 12 Chemistry and play with words without any problem. Mexico, (+ The Kc constant shows that the ratio of products to reactants is very small, indicating that a much higher concentration of reactants exists compared to the concentration of products. E) -50, 13) The Keq for the equilibrium below is 50. - A gas can be converted into a liquid by heating. D. 0.087 United Kingdom, (+ D. Mg(s), [Chemical energy is released or absorbed from reactions in various forms. Part B: Calculate the work done, w. [A 100-W lightbulb is placed in a cylinder equipped with a moveable piston. E. methanol, Give the major force between ethanol and water. E. 25.0 g Au, CAu = 0.128 J/gC, Calculate the change in internal energy (E) for a system that is giving off 25.0 kJ of heat and is changing from 18.00 L to 15.00 L in volume at 1.50 atm pressure. B. 48) Q: Find the volume of methane measured at 298 K and 1.72 atm required to convert 0.620 L of water at 298 K to water vapor at 373 K. The enthalpy change for converting 1.00 mol of ice at -50.0C to water at 70.0C is __________ kJ. C. 0.222 992) E) only reactants are present, 23) The equilibrium constant for the gas phase reaction
E) none of the above, 15) Which of the following expressions is the correct equilibrium-constant expression for the reaction below? B. density Calculate K and Kp for this reaction. From Midterm 3: C. 3.42 torr A. Mexico, (+ Equilibrium constant expression in terms of partial pressures E. increase pressure, The following reaction is exothermic. B. removing O2 Strong bonds break and weak bonds form. 2HI (g) = H2 (g) + I2 (g) Kp = 0.016 If 2.58 atm of HI (g) is sealed in a flask, what is the partial pressure of each gas. Belgium, (+ A) the quantities of reactants and . What is dynamic equilibrium? 2NO2 (g) 2NO (g) + O2 (g)
D. 12.9 kJ C. remove reactant After a sufficiently long time, [A] will approach zero, regardless of the values of k and k'. Phenomenon after H2 (hydrogen) reacts with I2 (iodine) This equation does not have any specific information about phenomenon. 48) Calculate Erxn for the combustion of sucrose in kJ/mol sucrose. +1251 J mol-1 From Midterm 3: [The decomposition of SO2Cl2 is first order in SO2Cl2 and has a rate constant of 1.46104 s1 at a certain temperature] C. The reciprocal concentration, [A]-1, changes linearly with time. \mathrm{Co}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \rightleftharpoons \mathrm{Co}(\mathrm{s}) & \text { voltage }=-0.28 \mathrm{~V} \\ 1/2 N2(g) + O2(g) NO2(g) Hrxn = +33 kJ Calculate the pOH of a solution that contains 7.8 x 10-6 M OH- at 25C.
-2.16C A) increase the rate of the forward reaction only
Bond Bond Energy (kJ/mol) Hrxn = ? D. 0.117 M E. 42.7 g. [When 1 mol of a fuel is burned at constant pressure, it produces 3455 kJ of heat and does 12 kJ of work] [Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 C. What is the specific heat of benzene? D. The value of pH is somewhat lower than 2.13. What is the vapor pressure of propane at 25.0 C? 33) Note: Names of real elements have been changed to 'Xs' and 'Xo'. Reaction rates but not the rate constants k and k' depend on temperature. [Suppose that 1.10 g of rubbing alcohol (C3H8O)] 82) Hydrogen iodide can decompose into hydrogen and iodine gases. E. 5.01 torr. Egypt, (+ According to the following thermochemical equation, what mass of HF (in g) must react in order to produce 345 kJ of energy? Switzerland, (+ H2(g) + I2(g) .
Another example of a chemical equation that can be used to explain is given below: Equation: 2 S O 2 ( g) + O 2 ( g) 2 S O 3 ( g) Equilibrium Constant: K C = [ S O 3] 2 [ S O 2] 2 [ O 2] Moreover, in terms of finding equilibrium constant for gases, partial pressure is taken into account. C. Neither direction is favored. 93) H2 (g) + I2 (g) 2HI (g) At equilibrium in a particular experiment, the concentrations of H2, I2, and HI were 0.15 M, . 10 (a) total pressure(b) catalyst used(c) amount of H2 and I2(d) temperature, (a) 2 10-4(b) 4 10-2(c) 2 10-2(d) 1 10-2, (a) bar min-1, bar2 min-1(b) bar min-1, bar1/2 min-1(c) bar1/2 min-1, bar2 min-1(d) bar min-1, bar1/2 min-1, (a) 9 times(b) 4 times(c) 16 times(d) 8 times, (a) NH4NO2 N2 + 2H2O(b) NO + O3 NO2 + O2(c) 2NO + Br2 2NOBr(d) CH3CHO CH4 + CO, (a) mol L-1 s-1(b) s-1(c) mol-2 L s-1(d)mol L-1, (a) (i)2, (ii) 1(b) (i)2,(ii) 2(c) (i) 1, (ii) 1(d) (i) 1, (ii) 2, (a) temperature of the reaction(b) extent of the reaction(c) initial concentration of the reactants(d) the time of completion of reaction, (a) Rate = k [O] [O3](b) Rate = k [O3] [O2]-1(c) Rate = k [O3](d) Rate = k [O2] [O], (a) zero order reaction(b) first order reaction(c) second order reaction(d) third order reaction, (a) order of a reaction(b) molecuiarity of a reaction(c) fast step of the mechanism of a reaction(d) half-life of the reaction, (a) the order and molecuiarity of the slowest step are equal to one(b) molecuiarity of the reaction can be zero, one or two(c) molecuiarity of the reaction can be determined only experimentally(d) more than one reacting species are involved in one step, (a) the order and molecuiarity of the slowest step are equal to one, (a) the rate of fastest intermediatestep(b) the sum total of the rates of all intermediate steps(c) the average of the rates of all the intermediate steps(d) the rate of slowest intermediate step, (d) the rate of slowest intermediate step, (a) temperature(b) mechanism of reaction as well as relative concentration of reactants(c) molecularity(d) pressure, (b) mechanism of reaction as well as relative concentration of reactants, (a) inversely proportional to the concentration units(b) independent of concentration units(c) directly proportional to concentration units(d) inversely proportional to the square of concentration units, (a) 2 10-2 s-1(b) 4 10-4 s-1(c) 20 s-1(d) 2 10-4 s-1, (a) EaR(b) Ea2.303R(c) 2.303Ea.R(d) Ea2.303, (a) mol L-1s-1(b) s-1(c) L mol-1s-1(d) L2mol-2s-1, (a) triple(b) increase by a factor of 4(c) double(d) remain unchanged. Kc depends on how the chemical equation is written, but not on how the reaction is carried out.
C. 150 g A. D. Energy is neither created nor destroyed, excluding nuclear reactions. Sweden, (+ 880) United Arab Emirates, (+ C. H3O+/OH- B) 2500
[An aqueous solution contains 32% HCl by mass] is Keq = 2.80 102 at 999 K. At equilibrium, ________. Which metal in the list is the best reducing agent? 33) So Kp = (PH2) x (PI2) / PHI^2 P = partial pressure C) decrease the value of the equilibrium constant
B. Tap on the individual Chapter connection of twelfth Standard Chemistry you need to practice and profit the comparing points MCQ Quiz Questions. Half-reaction reaction potentials you might need are: Note: Names of real elements have been changed to 'Xs' and 'Xo'. 2 Xs(s) + 3 Xn2+(aq) 2 Xs3+(aq) + 3 Xn(s) . B) [(NH4)2Se] / [NH3]2[H2Se]
Even though metal is a good conductor, frost can be seen on parked cars in the early morning even when the air temperature is above freezing. The total number of stars for this article is: 5 in 1 review. You will track down a rundown of Chapter wise MCQ Questions with Answers for CBSE Class 12 Chemistry here to start your planning. Finland, (+ E. In equilibrium, the ratio [P] / [A] is equal to k / k'.
Non Examples Of Sectionalism,
Articles I