The symbols have their usual meaning, for example AG stands for the standard Gibbs free energy of reaction and K stands for the equilibrium constant. E) shift the equilibrium to the right, D) increase the rate at which equilibrium is achieved without changing the composition of the equilibrium mixture, Chemistry: Chapter 13 Review: Properties of S, CHAPTER 17: ADDITIONAL ASPECTS OF AQUEOUS EQU. A. 25.0 g Ag, CAg = 0.235 J/gC From Midterm Exam 2 : - 1.92 x 103 kJ/mole 348) 107 g [Acid rain over the Great Lakes has a pH of about 4.6.] Note: Names of real elements have been changed to 'Xd'. D) at low temperature and high pressure Determine the partial pressure of each gas at equilibrium. D. +653 J mol-1 C) 7.07 Bond Bond Energy (kJ/mol) Donald A. McQuarrie, Ethan B Gallogly, Peter A Rock, Edward Atkins, Julio de Paula, Peter Atkins. Maldives, (+ 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? 2003-2023 Chegg Inc. All rights reserved. 2) Which one of the following is true concerning the Haber process? 3) Which one of the following will change the value of an equilibrium constant? 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. Additionally, you can reconsider all Chemistry sections appropriately whenever and save significant season of yours during class tests and yearly tests readiness. A) some removal of from the reaction vessel (V and T constant) E. 5.01 torr. United Kingdom, (+ A) [SO3] / [SO2][O2] 2NO(g)N2(g)+O2(g)Kp=2.11030 \mathrm{~Pb}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \rightleftharpoons \mathrm{Pb}(\mathrm{s}) & \text { voltage }=-0.13 \mathrm{~V} \\ Arsenic acid (H3AsO4) is a polyprotic acid with Ka1 = 5.510-3, Ka2 = 1.710-7, and Ka3 = 5.110-12. 2 HBr(g) H2(g) + Br2(g) Kc = ? The final temperature of the mixture upon reaching thermal equilibrium is 27.9 C] What is the boiling point of water at an elevation of 1.00104 ft ? Find the equilibrium amounts of these compounds if they all start out at 0.120 M. Solution: Determine Qc so that you know which direction the reaction will proceed. B) N2O4 (g) 2NO2 (g) Zimbabwe, (+ b. Georgia, (+ C. 11.70 992) E. 0.371, From Midterm Exam 2: 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. Mexico, (+ F 2100 universal tv remote manual ethanol is capable of forming hydrogen bonds with water good breakfast cereal for type 2 diabetes naturally with diet Of the three basic states of matter, the particles in gas are much . 82) D) only products are present Test your critical thinking abilities by noting the Chemistry Multiple Choice Questions with Answers for Class 12 PDF all alone. 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] Q: What is the half-life for this reaction? 87.0C D. -0.91C 11) The Keq for the equilibrium below is 5.4 1013 at 480.0 C. 92) D. +473 kJ system remains constant during its change from Examples:- (i) H2(g) + I2(g) 2HI(g) the initial to final state. - The relationship between vapor pressure and temperature is not linear, but rather, it is exponential. The equilibrium-constant expression depends on the _____ of the reaction. Zimbabwe. South Africa, (+ C) slow the reverse reaction only Afghanistan, (+ B. Explain why chlorine occurs as diatomic molecules in nature rather than individual atoms. D. 7.2 10-4 M, Find the pH of a 0.390 M aqueous benzoic acid solution. [A solution contains a mixture of pentane and hexane at room temperature. Q: What is the percent ionization of ammonia at this concentration? 33) What is dynamic equilibrium? C. 62.5C All the Solutions are explained in a comprehensive manner and are recommended by many subject experts. 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 ? Check all that apply. The equilibrium constant (K ) would be __________. 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. Dynamic equilibrium in a chemical reaction is the condition in which the rate of the forward reaction equals the rate of the reverse reaction. Albania, (+ A. Pakistan, (+ E. 13.02, From Midterm Exam 2: Science Chemistry For the following reaction, 2HI(g) --> H2(g) + I2(g) a. 358) C) roughly equal amounts of products and reactants are present [A silver block, initially at 58.8 C, is submerged into 100.0 g of water at 25.0 C, in an insulated container. A. 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. (iii) The total pressure increases as the system approaches equilibrium. Understudies who are planning for Central board assessments in Chemistry specifically CBSE, ICSE, and NIOS Board. D. 1.85 E. All of these have intermolecular forces stronger than dispersion. A) N2O4 (g) 2NO2 (g) +25.5 kJ From Midterm 3: A. From Midterm 3: New Zealand, (+ Propane has a normal boiling point of 42.0C and a heat of vaporization (Hvap) of 19.04 kJ/mol. CH4(g)+2Cl2(g)CH2Cl2(g)+2HCl(g) United States, (+ Weak bonds break and strong bonds form. 41) E. 29.8 kJ mol-1, What is the conjugate base of H2PO4- ? C. +115 kJ Example: 4.00 moles of HI are placed in an evacuated 5.00 L flask and then heated to 800 K. The system is allowed to reach What will be the equilibrium concentration of each species? Consider the following chemical reaction: H2 (g) + I2 (g) <> 2HI (g) At equilibrium in a particular experiment, the concentrations of H2, I2, and HI were 0.15 M, 0.033 M, and 0.55 M, respectively. . A) [NH3][H2Se] / [(NH4)2Se] Based on the freezing point depression constant for water, Kf = 1.86 K /(mol kg-1), what is the freezing temperature of the mixture. [A redox reaction has an Ecell=1.00V] C. K>1 45) At 100 C and 1 atm, water is in which phase? Provide your answer in units of coulombs (C). Part B: What is the value of H for the combustion of the fuel? C 185 7) Q7. What is NCERT Exemplar and where can we get its Solutions? Tap on the individual Chapter connection of twelfth Standard Chemistry you need to practice and profit the comparing points MCQ Quiz Questions. The majority of the boards that prefer the NCERT Textbooks can use these Solutions for getting a grip on the subject. 49) India, (+ [Like all equilibrium constants, the value of Kw depends on temperature. A. F2 A) 25 2A(g) + 2B(g) A2B2(g) Kc = 28.2. Q: What is the pH of a 0.240 M ammonia solution? The equilibrium constant K p is independent of (A) Total pressure (B) Catalyst (C) The amounts of H 2 and I 2 present However, it changes with Temperature B. CP is always at a higher temperature relative to TP. Use the following reactions and given H values. E) [SO3] / [SO2][O2]2, 16) Which of the following expressions is the correct equilibrium-constant expression for the reaction below? New Zealand, (+ So Kp = (PH2) x (PI2) / PHI^2 P = partial pressure NCERT Exemplars are basically practice-books that contain additional questions of higher level and give you comprehensive and thorough learning. (i) The value of K increases as the system approaches equilibrium. United Kingdom, (+ Detailed description of the questions is given by subject experts and you can use them as a reference during your preparation. C) [H3O+][F-] / [HF][H2O] E. All of the above are true. The lightbulb is turned on for 0.015 h, and the assembly expands from an initial volume of 0.90 L to a final volume of 5.89 L against an external pressure of 1.0 atm] 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. Georgia, (+ [Ammonia, NH3, is a weak base with a Kb value of 1.8105.] B) increase the equilibrium constant so that products are favored 3. E. -1.35C. A) [H+][HCO3-] / [CO2] Belgium, (+ Which statement is true at equilibrium? A -253 233) D -511. Decreased? 90) [The vapor above an aqueous solution contains 17.9 mg water per liter at 25 C] Since there is not a viable alternative for it. N2(g)+O2(g)+Br2(g)2NOBr(g). 971) B. Sweden, (+ When a liquid evaporates in a closed container, molecules with relatively higher kinetic energy escape the liquid surface into the vapour phase and number of liquid molecules from the vapour phase strike the liquid surface and are retained in the liquid phase. 2HI (g) H2 (g) + I2 (g) Ti (s) + 2Cl2 (g) TiCl4 (l) So, visit our site and easily find MCQs for all subjects classwise. Understudies who are planning for serious assessments like NTSE, Olympiad, and so forth for class 12. O-H 464 D) increase the value of the equilibrium constant Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. 4.19 (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) Keq does not change with temperature, whereas Q is temperature dependent. for the following reaction at 25C: HI(g)12H2(g)+12I2(g), The given reaction is Calculate Hrxn for the following reaction: 268) Denmark, (+ 2CH3NO2(l)+3/2O2(g)2CO2(g)+3H2O(l)+N2(g) Hrxn = -1418 kJ] 0.21 M B. [The decomposition of SO2Cl2SO2Cl2 is first order in SO2Cl2SO2Cl2 and has a rate constant of 1.46104 s1s1 at a certain temperature] 57.0 kJ Ukraine, (+ From Midterm 3: In chemical equation H2(g) + I2(g)2HI (g) the equilibrium constant Kpdepends onSee more. B. 2NO (g) + O2 (g) 2NO2 (g) E) only reactants are present, 22) The equilibrium constant for the gas phase reaction Russia, (+ C-O 360 Xd(s) | Xd2+(aq) || H+(aq) | H2(g) | Pt New Zealand, (+ +206 kJ Determine the cell notation for the redox reaction given below. Pakistan, (+ Which one statement regarding the first-order reaction Business, Finance, Economics, Accounting, Operations Management, Computer Science, Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical . corresponds to which redox cell reaction ? A) 5.4 10-13 At the same temperature, pure liquid A has a vapor pressure of 220 torr, while pure liquid B has a vapor pressure of 400 torr. Use Q to determine which of the statements below is true. What is the specific heat of benzene? Part B: Calculate the work done, w. [A 100-W lightbulb is placed in a cylinder equipped with a moveable piston.
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