in chemical equation h2+i2=2hi the equilibrium constant kp depends on

380) 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. D. Intermolecular forces. 351) Solution Verified by Toppr Correct option is D) For the reaction, H 2(g)+I 2(g)2HI(g), the number of moles of gaseous reactants is equal to the number of moles of gaseous products. C. 62.5C B. removing O2 [The half-life for the radioactive decay of U238 is 4.5 billion years and is independent of initial concentration] A. 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]. 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. C. 2.13 10-14 A) products predominate (R = 0.0821 L atm/ (K mol)) A. H2(g)+I2(g)2HI(g) Which of the following statement is/are true? C. 55.8 C Q: What is the value of the equilibrium constant, Kp, for the reaction? Ti (s) + 2Cl2 (g) TiCl4 (l) 64) What is NCERT Exemplar and where can we get its Solutions? From Midterm Exam 2 : This problem has been solved! CH3Cl(g)+Cl2(g)CH2Cl2(g)+HCl(g), H=105.8 kJ, Use the standard reaction enthalpies given below to determine Hrxn for the following reaction: Q: What is the mass of the silver block? 48) A. 966) C. 150 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] 6.41 C. 0.322 M E) only reactants are present, 24) The equilibrium constant for the gas phase reaction PART B: Tajikistan, (+ 3. A. Mauritius, (+ A. Sweden, (+ H2 (g) + I2 (g) HI (g) H2(g) +I2(g) 2HI(g) Using the Equilibrium Constant (cont) E.g.2 For the reaction: PCl5(g) PCl3(g) + Cl2(g), Kc = 0.800 M at 340oC. B. 880) D. 32.2 kJ mol-1 a. Give the direction of the reaction, if K >> 1. SiO2(s) + 4 HF(g) SiF4(g) + 2 H2O(l) Hrxn = -184 kJ 28) Which reaction will shift to the left in response to a decrease in volume? A. H2(g) Detailed description of the questions is given by subject experts and you can use them as a reference during your preparation. Russia, (+ (Assume that the cylinder and lightbulb assembly comprise the system and assume two significant figures. The reaction : N 2O4 2N O2 J & K CET 2018 8. 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 . Q: What is the [H3O+] in pure water at body temperature? After equilibrium was reached, the partial pressure of NO dropped to 320 torr. 268) Consider an acetate buffer that is a mixture of 0.20 M acetic acid and 0.20 M sodium acetate. 1) [An aqueous solution contains 32% HCl by mass] Part B: Calculate the boiling point of the solution above. Understudies who are planning for Central board assessments in Chemistry specifically CBSE, ICSE, and NIOS Board. Part B: Calculate the work done, w. [A 100-W lightbulb is placed in a cylinder equipped with a moveable piston. For a process at constant pressure, 49,600 calories of heat are released. What state transition or transistions occur in carbon dioxide if you begin with a sample of carbon dioxide at 60.0 C at 50.0 atm and warm the sample to 10.0 C and 50.0 atm? 995) France, (+ D) increase the rate at which equilibrium is achieved without changing the composition of the equilibrium mixture C. 11.70 B) [SO2] / [SO3] For the reaction : 2HI(g) H2 (g)+ I2 (g), the degree of dissociated () of HI(g) is related to equilibrium constant Kp by the expression: For the reaction H2(g) + I2(g) 2HI(g) the equilibrium constant kp changes with. 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. * Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project H2 (g) + I2 (g) 2HI (g) What is the value of Keq for the following reaction? - The vapor pressure of a liquid increases with increasing temperature. Understudies who wish to hone their insight into Chemistry. NO(g)+12Br2(g)NOBr(g)Kp=5.3 Q8. A galvanic cell designated as E. -117 kJ. Georgia, (+ Substance Hf (kJ/mol) A. Erxn can be determined using constant volume calorimetry. 2NH3 (g) N2 (g) + 3H2 (g) 224) 20) C) roughly equal amounts of products and reactants are present 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. The reaction mixture will contain [A]=0.1M and [B]=1.0M. 31) E. 53.1C, The specific heat capacity of liquid water is 4.18 J/g-K. How many joules of heat are needed to raise the temperature of 5.00 g of water from 25.1C to 65.3C? What is the vapor pressure of propane at 25.0 C? is Keq = 2.80 102 at 999 K. At equilibrium, ________. C. HF N2(g) + O2(g) 2 NO(g) Hrxn = +183 kJ C. N2 H 2(g) +I 2(g) 2H I (g) Osmosis is the process responsible for carrying nutrients and water from groundwater supplies to the upper parts of trees. Strong bonds break and weak bonds form. Which statement is true of an endothermic reaction? Part A: What is the value of E for the combustion of the fuel? D) 2500 E. The equilibrium constant K as well as [A] and [A2] are unchanged. 855) 1-propanol 1 Answer +1 vote answered Dec 12, 2019 by Kajal01 (25.8k points) Answer (c) amount of H2 and I2 Prev Question Next Question 358) He(g) 234) 41) What is the primary source of water stored in an aquifer? B) 1.56 104 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 At 100 C and 1 atm, water is in which phase? A. A) [HF][H2O] / [H3O+][F-] 52) 2HI(g); Equilibrium is the exact balancing of two opposing processes. 1/2 N2(g) + O2(g) NO2(g) Hrxn = +33 kJ Coming up next are not many significant advantages of CBSE MCQs with Answers for Class 12 Chemistry distributed by cbseMCQ.com: Q1. B. Which of the following is NOT a conjugate acid-base pair? Choose the molecule or compound that exhibits dispersion forces as its strongest intermolecular force. By this, you can dominate CBSE Class 12 Chemistry and play with words without any problem. 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. What is the stoichiometric coefficient of Xx(s) in the balanced reaction equation for that cell ? If only COF2 is present initially at a concentration of 2.00 M, what concentration of COF2 remains at equilibrium? Q7. Let us consider that one mole of H2 and one mole of I2 are present initially in a vessel of volume V dm3. D. capillary action D) only products are present D. -150. kJ C. 1.92 x 103 kJ/mole Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. 0.81 [The decomposition of SO2Cl2 is first order in SO2Cl2 and has a rate constant of 1.46104 s1 at a certain temperature] 2.65 992) Here you will find NCERT MCQ Questions for Class 12 Chemistry with Answers PDF Free Download based on the important concepts and topics given in the textbook.This may assist you to understand and check your knowledge about the chapters. C. 3.42 torr 41) The reaction mixture will contain [A]=0.1M and [B]=1.0M. What is dynamic equilibrium? 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. increase product 380) There is not a viable replacement for reliable practice whether one needs to comprehend an idea completely or one needs to score better. A sample of NO gas was introduced into a container such that the initial partial pressure of NO was 560 torr. 2003-2023 Chegg Inc. All rights reserved. Equilibrium hydrogen is defined as a sample of hydrogen existing at the equilibrium ratio of orthohydrogen-parahydrogen at a given temperature (shown by the crimson dash-dot line in the figure). 2CH3NO2(l)+3/2O2(g)2CO2(g)+3H2O(l)+N2(g) Hrxn = -1418 kJ] [Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute] Egypt, (+ A. 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. You will track down a rundown of Chapter wise MCQ Questions with Answers for CBSE Class 12 Chemistry here to start your planning. Which change will shift the equilibrium to the left? Thank you for your participation! Switzerland, (+ Essentt - Handpicked Products. C. The value of pH is 6.65. 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. H2(g) + I2(g) 2HI(g) At equilibrium, the mixture is found to contain 1.580 mole of HI. New Zealand, (+ D. If the temperature is raised, then the reverse reaction is favored. H2 (g) + I2 (g)-- > < -- 2HI(g) H=-10.4 kJ. If you have any query regarding CBSE MCQs, drop a comment below and we will get back to you at the earliest. Q: Calculate mole fraction of the solution. Calculate the standard cell potential, Ecell, for the cell defined by the reaction 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. 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 ? [Acid rain over the Great Lakes has a pH of about 4.6.] B) a decrease in the total pressure (T constant) C. +115 kJ Weak bonds break and strong bonds form. Le Chtelier's principle predicts that the equilibrium partial pressure of CO (g) can be maximized by carrying out the reaction ________. (NH4)2Se (s) 2NH3 (g) + H2Se (g) What is the boiling point of water at an elevation of 1.00104 ft ? HC2H3O2 1.8105] C) roughly equal amounts of products and reactants are present 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] B. What is the osmotic pressure of this solution at 25 C? E. In equilibrium, the ratio [P] / [A] is equal to k / k'. Identify the change that will always shift the equilibrium to the right. Which statement describes best the pH of a 0.010 M solution of this acid. South Africa, (+ H2 (g) + Br2 (g) 2 HBr (g) For these conditions, what is the value of Kp for the reaction that occurred: A) N2 (g) + 3H2 (g) 2NH3 (g) B. At equilibrium the total pressure in the container is 1.300 atm. 1.00 10-14 Q: If a reaction mixture is initially 0.20 M in X, what is the concentration of X after 151 seconds? Hydrogen iodide can decompose into hydrogen and iodine gases. Pakistan, (+ 2 NO(g) + O2(g) ' 2 NO2(g) M. What is the half-life, t1/2, for this reaction in units of seconds ? 2HI(g) I, M 1.00 1.00 0 C, M -x -x +2x . User Agreement,Privacy Policy C. 12.54 4) Which of the following expressions is the correct equilibrium-constant expression for the equilibrium between dinitrogen tetroxide and nitrogen dioxide? 82) A(g) + 3B(g) AB3(g) Kc = 478, The equilibrium constant is given for two of the reactions below. Switzerland, (+ -69.8 J mol-1 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. Provide your answer in units of coulombs (C). Initially, the vessel contains only X2 at a pressure of 1.75 atm. [Acid rain over the Great Lakes has a pH of about 4.6.] 52) A. Q: At what temperature does benzene boil when the external pressure is 460 torr ? E. 13.02, From Midterm Exam 2: 960) E. +4087 J mol-1, From Midterm Exam 2: NCERT Exemplars are basically practice-books that contain additional questions of higher level and give you comprehensive and thorough learning. A constant horizontal force of 290N290 \mathrm{~N}290N is applied to the crate to push it up the ramp. where n represents the stoichiometric coefficients] B. South Korea, (+ 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.