CH4(g)+2Cl2(g)CH2Cl2(g)+2HCl(g) 46) Choose the molecule or compound that exhibits dispersion forces as its strongest intermolecular force. [A solution contains a mixture of pentane and hexane at room temperature. Or if any of the following reactant substances I2 (iodine), disappearing B. Intramolecular forces D. 12.9 kJ 91) D. 4.60. . Which of the following substances would you predict to have the highest Hvap? chemical equilibrium class-11 1 Answer +1 vote answered Feb 2, 2022 by Princebarnwal (34.9k points) selected Feb 6, 2022 by Jeewant Best answer For the given reaction, Kp = (pH I)2 (pH 2)(P I 2) ( p H I) 2 ( p H 2) ( P I 2) 1.9 10-4 M - The relationship between vapor pressure and temperature is linear. Which metal ion in the list is most difficult to reduce? B) 0.50 Portugal, (+ By rehearsing more second Year Chemistry MCQs with Answers Pdf Download, understudies can work on their speed and precision which can help them during their board test. Oman, (+ Understudies who are getting ready for designing and clinical selection tests like NEET, IIT JEE, AIIMS, JIPMER and SAT Exams in Chemistry. What Is The Equilibrium Expression For H2 I2 2Hi? Quick Answer A) 5.4 10-13 2HI = H2 + I2 | Chemical Equation. 9) The equilibrium expression for Kp for the reaction below is ________. 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. E. 73.6 kJ, It takes 11.2 kJ of energy to raise the temperature of 145 g of benzene from 23.0C to 68.0C. Solved Consider the chemical equation and equilibrium | Chegg.com [The half-life for the radioactive decay of U238 is 4.5 billion years and is independent of initial concentration] What is the specific heat of benzene? In chemical equation H2 (g) + I2 (g) 2HI (g) the equilibrium constant Kp depends on See more A total pressure B catalyst used C amount of H2 and I2 D Temperature Submit Class 12 (PCB) Class 12 (PCM) Like Comment Share Write a comment 500+ more Questions to answer Popular Courses FREE How to start preparing for IIT from Class 10th \end{array} 973) E. -1.35C. B) N2 (g) + O2 (g) 2NO (g) D. 0.117 M Mauritius, (+ E. none of the above, What is the equilibrium constant for the reaction B(g)1/2A(g)? [Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 C. 2SO2 (g) + O2 (g) 2SO3 (g) D -511. 82) 92) 25) At 400 K, the equilibrium constant for the reaction A. A. Nepal, (+ Consider the first-order decomposition of compound A according to Use these reactions and their equilibrium constants to predict the equilibrium constant for the following reaction: 6 H2(g) + 6 D2(g) 12 HD(g) Kc = ? E) in the presence of solid carbon, 35) The effect of a catalyst on an equilibrium is to ________. 2NH3 (g) N2 (g) + 3H2 (g) H2 (g) + I2 (g) 2HI (g) At equilibrium in a particular experiment, the concentrations of H2, I2, and HI were 0.15 M, . PART A: A. O-H 464 Match each term in Column A with its corresponding description in Column B. adulthood. 52) Consider the following reactions and their respective equilibrium constants: H 2(g) +I 2(g) 2H I (g) DOC Chapter 14 - CHEMICAL EQUILIBRIUM E. 5.01 torr. Mauritius, (+ 268) This multitude of MCQs with answers are delivered by subject specialists for a wide range of understudies. Q: Calculate mole fraction of the solution. In chemical equation H2(g) + I2(g) 2HI (g), the equilibrium Kp depends on (a) total pressure (b) catalyst used (c) amount of H2 and I2 (d) temperature class-12 Please log in or register to answer this question. 34) Chemistry MCQ For Class 12 Chapter astute with Answers PDF Download. E. -117 kJ. South Africa, (+ B) 1.9 10-14 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. 49) Polyoxometalate Molecular Science [PDF] [534rrp5c23v0] C. 1-pentanol The amounts of H 2 and I 2 present D Temperature Medium Solution Verified by Toppr Correct option is D) The equilibrium constant does not change at all with changes in concentrations, volume, pressure, presence of catalyst, etc. Additionally, you can reconsider all Chemistry sections appropriately whenever and save significant season of yours during class tests and yearly tests readiness. D. 32.2 kJ mol-1 Portugal, (+ HI(g)12H2(g)+12I2(g), The equilibrium constant is given for one of the reactions below. B. Understudies who are planning for serious assessments like NTSE, Olympiad, and so forth for class 12. 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 H2 (g) + I2 (g) 2HI (g) What is the value of Keq for the following reaction? Rehearsing NCERT Online Chemistry Objective Questions For Class 12 Pdf Answers is perhaps the most ideal way to plan for the CBSE Class 12 board test. B) reactants predominate 44) From Midterm Exam 2: Afghanistan, (+ For a chemical equilibrium reaction H2(g) + I2(g) 2HI(g) United States, (+ D. Xd + H+ Xd2+ + H2 + Pt Egypt, (+ Ukraine, (+ 977) D. 5.50 10-14 What is the rate constant, k, for this reaction in units of L mol-1 s-1. A compound is found to have a molar mass of 598 g/mol. In chemical equation H2 (g) I2 (g) 2HI (g) the equilibrium constant By rehearsing more second Year Chemistry MCQs with Answers Pdf Download, understudies can work on their speed and exactness which can help them during their board test. 07 H2(g) Nonmetal Gas 2 00 L container and goes to equilibrium at 200 oC 00 L container and goes to equilibrium at 200 oC. India, (+ 968) 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. - 1.92 x 103 kJ/mole (Assume ideal behavior.). What is the primary source of water stored in an aquifer? 355) N2(g) + O2(g) 2 NO(g) Hrxn = +183 kJ * Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project H2 (g) + I2 (g) HI (g) A) 25 B) 2500 C) 7.07 D) 100 E) -50 C) 7.07 @X UBBIS Digitized by the Internet Archive in 2019 with funding from University of Alberta Libraries https ://arch i ve . In chemical equation H2(g) + I2(g) 2HI(g), the equilibrium Kp depends on. [Acid rain over the Great Lakes has a pH of about 4.6.] Q: Calculate the [H3O+] of this rain. What is NCERT Exemplar and where can we get its Solutions? \mathrm{Zn}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \rightleftharpoons \mathrm{Zn}(\mathrm{s}) & \text { voltage }=-0.76 \mathrm{~V} Assuming that no heat is lost to the surroundings, what will the final temperature of the system be? A) products predominate A closed vessel at 400 K is charged with 1.00 atm of Br2 (g), 1.00 atm of Cl2 (g), and 2.00 atm of BrCl (g). One of these substances is a liquid at room temperature. C=O 799 Part C: Calculate the change in the internal energy of the system, E. Determine the value of the missing equilibrium constant. D) increase the rate at which equilibrium is achieved without changing the composition of the equilibrium mixture A. 46) B) a decrease in the total pressure (T constant) Guinea, (+ A reaction of the type 2A P has the following rate law: rate = k[A]2. Hrxn = ? 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. D. Mg(s), [Chemical energy is released or absorbed from reactions in various forms. -69.8 J mol-1 Check all that apply. A) N2O4 (g) 2NO2 (g) B) 1 / [HF] A) [H+][HCO3-] / [CO2] D. 1.72 J/(g C), The temperature rises from 25.00C to 29.00C in a bomb calorimeter when 3.50 g of sucrose undergoes combustion in a bomb calorimeter. ..Keq = 6.2 x 10^2 B) [SO2] / [SO3] 2NH 3 (g) N 2 . 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. 91) Comprehend the ideas and practice Objective Type Questions for twelfth Class Chemistry however much you can to score well. Bahrain, (+ 27) 966) N2(g)+O2(g)+Br2(g)2NOBr(g). C) 6.44 105 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. 90) corresponds to which redox cell reaction ? [A] and [P] denote the concentrations of A and P, respectively. Understudies who wish to hone their insight into Chemistry. Work, w, is the energy transferred when an object is caused to move a distance, d, against a force, F. Mathematically, we would write this as w=Fd. A. Erxn can be determined using constant volume calorimetry. 2 HI(g) H2(g) + I2(g) Kc= 0.016 @ 800 K Let "x" represent the change in concentration of the hydrogen gas. 48.6 C [Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute] For the reaction, H2(g) + I2(g) 2HI(g) , the equilibrium constant Kp The equilibrium constant K will increase above 2.010-3 (answer is debatable), From Midterm Exam 2: 57.0 kJ For H2O, Hfus = 6.01 kJ/mol, and Hvap = 40.67 kJ/mol. H2(g)+I2(g)2HI(g) , K=6.2102 Determine the equilibrium concentration, [H3BO3], of this weak acid in the solution. A) N2 (g) + 3H2 (g) 2NH3 (g) Q: What is the [H3O+] in pure water at body temperature? A B + C [Ammonia, NH3, is a weak base with a Kb value of 1.8105.] B. NaCl C) addition of some to the reaction vessel (V and T constant) PDF 5.9 10 -3 - gccaz.edu D) Q does not depend on the concentrations or partial pressures of reaction components. Equilibrium constant expression in terms of partial pressures In chemical equation H2(g) + I2(g) 2HI(g), the equilibrium Kp depends 82) So, visit our site and easily find MCQs for all subjects classwise. Albania, (+ 2CO2 (g) 2CO (g) + O2 (g) H = -514 kJ Saudi Arabia, (+ Which of the following is TRUE if E sys = - 115 J? 4CuO (s) + CH4 (g) CO2 (g) + 4Cu (s) + 2H2O (g), 20) The equilibrium-constant expression for the reaction Turkey, (+ 960) C. 3.42 torr B) the rates of the forward and reverse reactions are equal. [An aqueous solution contains 32% HCl by mass] Swaziland, (+ From Midterm 3: Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Pocket (Opens in new window), Click to share on Telegram (Opens in new window), Click to share on Skype (Opens in new window), Click to share on WhatsApp (Opens in new window), General Principles and Processes of Isolation of Elements Class 12 MCQ Questions, The p-Block Elements Class 12 MCQ Questions, The d-and f-Block Elements Class 12 MCQ Questions, Coordination Compounds Class 12 MCQ Questions, Haloalkanes and Haloarenes Class 12 MCQ Questions, MCQ Questions for Class 12 Chemistry Chapter 1 The Solid State with Answers, MCQ Questions for Class 12 Chemistry Chapter 2 Solutions with Answers, MCQ Questions for Class 12 Chemistry Chapter 3 Electrochemistry with Answers, MCQ Questions for Class 12 Chemistry Chapter 5 Surface Chemistry with Answers, MCQ Questions for Class 12 Chemistry Chapter 6 General Principles and Processes of Isolation of Elements with Answers, MCQ Questions for Class 12 Chemistry Chapter 7 The p-Block Elements with Answers, MCQ Questions for Class 12 Chemistry Chapter 8 The d-and f-Block Elements with Answers, MCQ Questions for Class 12 Chemistry Chapter 9 Coordination Compounds with Answers, MCQ Questions for Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes with Answers, Chemistry MCQs for Class 12 Chapter Wise with Answers PDF Download. 0.043 Provide your answer in units of coulombs (C). The equilibrium constant for the reaction H2+I2<->2HI is 54.8 at 425 At equilibrium, ________. C. The anomaly of carbon dioxide is that it has a CP but no TP. 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] where n represents the stoichiometric coefficients] B) reactants predominate Oman, (+ 2003-2023 Chegg Inc. All rights reserved. The forward reaction is favored. This quantity of heat is equivalent to: information you need to know about E for the system, [The total change in internal energy is the sum of the heat, q, and work, w: E=q+w]. 2SO3 (g) 2SO2 (g) + O2 (g) After 203 s the concentration of A had fallen to one fifth of the initial value. [Acid rain over the Great Lakes has a pH of about 4.6.] D. 0.420 Le Chtelier's principle predicts that the moles of in the reaction container will increase with ________. 49) If the equilibrium constants for the formation of H S from H 2S is 1.0 107 and that of S 2 from H S ions is 1.2 1013 then the concentration of S 2 ions in aqueous solution is - JEE Main 2018 9. A(g) + 3B(g) AB3(g) Kc = 478, The equilibrium constant is given for two of the reactions below. B. D. 40.5C 7) C. N(g) Explain this phenomenon, keeping in mind that sound is reflected from the surface of the water and that the temperature of the air just above the water's surface is usually less than that at a height of 10m10 \mathrm{~m}10m or 20m20 \mathrm{~m}20m above the water. E. 0.169 M, From Midterm Exam 2: B) H2 (g) + Cl2 (g) 2 HCl (g) 966) 351) Q: If a reaction mixture is initially 0.20 M in X, what is the concentration of X after 151 seconds? B. [The decomposition of SO2Cl2 is first order in SO2Cl2 and has a rate constant of 1.46104 s1 at a certain temperature] 2 HBr(g) H2(g) + Br2(g) Kc = ? E) The reaction will go to completion since there are equal amounts of Br2 and Cl2. - The relationship between vapor pressure and temperature is not linear, but rather, it is exponential. 351) 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 . This problem has been solved! 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? 2A(g) + B(g) A2B(g) Kc = ? The equilibrium constant (Kp) for the interconversion of PCl5 and PCl3 is 0.0121: PCl5 (g) PCl3 (g) + Cl2 (g) . - A gas can be converted into a liquid by increasing the pressure of a gas sample. 968) B. It can be represented as. From Midterm 3: Students also can take a free test of the Multiple Choice Questions of Class 12 Chemistry. 230) \mathrm{Co}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \rightleftharpoons \mathrm{Co}(\mathrm{s}) & \text { voltage }=-0.28 \mathrm{~V} \\ D. all of the above From Midterm 3: 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] Bangladesh, (+ 348) Part B: If the butane is warmed to 25 C, how much liquid butane is present? a. A) products predominate What is the value of Keq for the following reaction? The molar mass of sugar is 342.3 g/mol. H2 (g) + I2 (g) HI (g) Close by that it helps the students with growing the overall appreciation in the subject and work on the data in the assessments. You can utilize the quick links on our page to view or download the CBSE MCQs of all classes in an easy way. E. The value of pH is 2.13. Which one? E. 13.02, From Midterm Exam 2: - A gas can be converted into a liquid by cooling. (Methanol ( CH3OH ) contains hydrogen directly bonded to oxygen, so it has hydrogen bonding. For the reaction H 2( g )+ I 2( g ) longrightarrow 2 HI ( g ), the Q: At what temperature does benzene boil when the external pressure is 460 torr ? A 250 mL sealed flask contains 0.65 g of butane at 22C.] Each question has four options followed by the right answer. Tajikistan, (+ A. Enter the email address you signed up with and we'll email you a reset link. 3.48 J/(g C) -4.56C 64) PDF Chapter 15 Practice Questions - umb.edu The system is losing 115 J, while the surroundings are gaining 115 J, A. energy associated with the temperature of an object, D. energy associated with the motion of an object, D. energy associated with the position or composition of an object. Daily act of different subject shrewd MCQs will assist with fostering a solid comprehension of every theme which you will recollect till date of your tests. 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. H2 + I2 = HI - Chemical Equation Balancer C. 55.8 C D. 7.2 10-4 M, Find the pH of a 0.390 M aqueous benzoic acid solution. 224) C. 1.94 46) H2(g) + Br2(g) 2 HBr(g) Kc = 3.8 104 Q7. Mexico, (+ B. Hrxn can be determined using constant pressure calorimetry. 12.72 Provide your answer in units of volts (V). Denmark, (+ - A liquid can be converted to a gas by heating. D. 5.11 What is the Kw of pure water at 50.0C, if the pH is 6.630? Germany, (+ 263) The equilibrium constant for the formation of hydrogen iodide according to to given equation is K. H2 + I2 2HI Find the equilibrium constant in terms of K for the reaction: HI 1/2 H2 + 1/2 I2 Please explain. C) 0.020 B. Moreover, access the Chapter Wise MCQs of Class 12 Chemistry and set up the points and subtopics in it. 234) 960) C. 0.222 Which of the following statements is TRUE? mmmmmmmH2 + mmlI2 mll2HI I/molL-1:ml1.000mm1.000mml1.000 C/molL-1:mm-xmmmll-xmmml+2x E/molL-1:m1.000-xm1.000-xm1.000+2x Understudies who are getting ready for Online/Offline Tests/Contests in Chemistry for class 12. B. E. All of the above are true. D) [SO3]2 / [SO2]2[O2]2 PPT PowerPoint Presentation Osmosis is the process responsible for carrying nutrients and water from groundwater supplies to the upper parts of trees. 28.4 kJ Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. C) slow the reverse reaction only B. D. 1.85 Which change will shift the equilibrium to the left? D. 1.2 subject to the given initial conditions. D. Intermolecular forces. +238 kJ Nepal, (+ 100 \mathrm{~Pb}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \rightleftharpoons \mathrm{Pb}(\mathrm{s}) & \text { voltage }=-0.13 \mathrm{~V} \\ Maldives, (+ D) at low temperature and high pressure Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25 C. 992) c. Which metal in the list is most reactive? 0.183 The standard reduction potential for the nickel(II) ion is 0.26 V and that of the aluminum(III) ion is 1.66 V] A. viscosity A. Part A: Calculate the freezing point of a solution containing 12.2 g FeCl3 in 160 g water. A. Bangladesh, (+ B. C. H3O+/OH- Let us consider that one mole of H2 and one mole of I2 are present initially in a vessel of volume V dm3. CH4(g)+Cl2(g)CH3Cl(g)+HCl(g), H=99.60 kJ . What is the value of Keq for the following reaction? Test your critical thinking abilities by noting the Chemistry Multiple Choice Questions with Answers for Class 12 PDF all alone. E) none of the above, 15) Which of the following expressions is the correct equilibrium-constant expression for the reaction below? Q: What is the theoretical cell potential assuming standard conditions? If the temperature is raised, then the forward reaction is favored. India, (+ 10) The Keq for the equilibrium below is 7.52 10-2 at 480.0 C. (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. 268) 355) For these conditions, what is the value of Kp for the reaction that occurred: The heat capacity of the calorimeter is 4.90 kJ/C. 2NH3 (g) N2 (g) + 3H2 (g) B. 44) A. F2 C. Xd2+ + 2 H+ Xd + H2 Cambodia, (+ Germany, (+ -2.16C Ukraine, (+ A. C) 2 SO3 (g) 2 SO2 (g) + O2 (g) E) only reactants are present, 22) The equilibrium constant for the gas phase reaction Egypt, (+ Compute the pH at 25C after 3 mL of the base has been added. Key points. South Africa, (+ E. There is not enough information to calculate the Kw. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. CHAPTER 15: CHEMICAL EQUILIBRIUM Flashcards | Quizlet The concentration [A] was measured at two different times: at t1 = 19.4 s the concentration of A was [A]1 = 0.62 M and at time t2 = 60.8 s the result was [A]2 = 0.31 A -253 B. 0.81 D. Energy is neither created nor destroyed, excluding nuclear reactions. C. +873 J mol-1 Sweden, (+ If you have any query regarding CBSE MCQs, drop a comment below and we will get back to you at the earliest. E) only reactants are present, 24) The equilibrium constant for the gas phase reaction
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