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

B) reactants predominate D. 12.9 kJ Hydrogen iodide can decompose into hydrogen and iodine gases. 351) N2(g)+O2(g)+Br2(g)2NOBr(g). E) only reactants are present, 24) The equilibrium constant for the gas phase reaction These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE. D) only products are present A. - A gas can be converted into a liquid by cooling. 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. H2 (g) + I2 (g)-- > < -- 2HI(g) H=-10.4 kJ. 358) 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. 90) 2 HBr(g) H2(g) + Br2(g) Kc = ? B. D. 13.16 Sweden, (+ A) The reaction quotient must be satisfied for equilibrium to be achieved. 971) 973) D. +653 J mol-1 What is the value of Keq for the following reaction? PDF Chapter 17 Equilibrium: the Extent of Chemical Reactions M. What is the half-life, t1/2, for this reaction in units of seconds ? B. Belgium, (+ - A gas can be converted into a liquid by increasing the pressure of a gas sample. The value of pH is somewhat higher than 6.65. [Nitromethane (CH3NO2) burns in air to produce significant amounts of heat. E. All of these have intermolecular forces stronger than dispersion. Chemical Kinetics Questions and Answers | Homework.Study.com CBSE Textbooks can be great to guide you for any exam and has detailed solutions for the questions. A sample of NO gas was introduced into a container such that the initial partial pressure of NO was 560 torr. B. removing O2 0.269 Q: What is the half-life for this reaction? C. HF Le Chtelier's principle predicts that the moles of in the reaction container will increase with ________. C. The bonds that break and those that form are of approximately the same strength. B. How can I download the CBSE MCQs in PDF Format for free? 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 France, (+ E) The reaction will go to completion since there are equal amounts of Br2 and Cl2. Germany, (+ Bangladesh, (+ Both TP and CP are located on the solid/liquid phase boundary. At equilibrium the total pressure in the container is 1.300 atm. 348) At equilibrium, ________. D. H3PO4 Hrxn = ? Answer A. Determine the equilibrium concentration, [H3BO3], of this weak acid in the solution. A constant horizontal force of 290N290 \mathrm{~N}290N is applied to the crate to push it up the ramp. Which one? Bahrain, (+ - The vapor pressure of a liquid increases with increasing temperature. 2NO2 (g) 2NO (g) + O2 (g) Germany, (+ where n represents the stoichiometric coefficients] Phenomenon after H2 (hydrogen) reacts with I2 (iodine) This equation does not have any specific information about phenomenon. E) -50, 13) The Keq for the equilibrium below is 50. These numerous decision inquiries for Chemistry Class 12 will assist with further developing logical and complex issue unraveling abilities. 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 . Download the Study24x7 App, so you can connect and collaborate. Spain, (+ D. 12.79 C. 16.6 kJ 41) 27.3 kJ mol-1 A) 5.26 10-20 (b)(b)(b) How much time does it take the crate to travel to the top of the ramp? Mexico, (+ SiO2(s) + 4 HF(g) SiF4(g) + 2 H2O(l) Hrxn = -184 kJ Oman, (+ By using Laplace transforms, solve the following differential equations H2(g) + I2(g) 2HI(g) At equilibrium, the mixture is found to contain 1.580 mole of HI. The equilibrium constant expression for the reaction is Kc = [HI]2 [H2][I2] Substituting the equilibrium concentrations into the equilibrium expression, Kc = (0.30)2 (0.012)(0.15) = 50 The magnitude of the equilibrium constant is 50 for the temperature at which the data was collected. B. SiH4 India, (+ (Hint: Start with calculating the pH as if this were a monoprotic acid.) C) roughly equal amounts of products and reactants are present D. 0.087 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. Saudi Arabia, (+ 2SO2 (g) + O2 (g) 2SO3 (g) A2 (g) 2 A (g). 30.5 C For a chemical equilibrium reaction H2(g) + I2(g) 2HI(g) B. 966) Q: How long will it take for 15% of the U238 atoms in a sample of U238 to decay? What is the best strategy while answering the Multiple Choice Questions for exams? Assuming no loss of heat to the surroundings, what is the final temperature of the mixture? Rating: 5 / 5 stars. A. A. Q: Find the value of the [H3O+] of rain over the West Coast that has a pH of 5.5. 2HI = H2 + I2 | Chemical Equation D. The value of K remains, but the equilibrium is shifted towards more products. C) N2 (g) + 2O2 (g) 2NO2 (g) 880) 64) D. 1.2 This problem has been solved! Answered: The statements in the tables below are | bartleby Moreover, access the Chapter Wise MCQs of Class 12 Chemistry and set up the points and subtopics in it. 2HI (g) H2 (g) + I2 (g) 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 : N 2O4 2N O2 J & K CET 2018 8. . Is there any website that covers MCQ Questions for CBSE Class 6 to 12? - 1.92 x 103 kJ/mole D) 100 17-2 The value of Q increases as a function of time until it reaches the value of K. b) No, Q would still increase with time because the [I2] would decrease in exactly the same way as [H2] decreases. B. Xx+(aq) + e-(aq) Xx(s) , A(g) + 2B(g) AB2(g) Kc = 59 Hungary, (+ According to the following thermochemical equation, what mass of HF (in g) must react in order to produce 345 kJ of energy? D. increase reactant After equilibrium was reached, the partial pressure of NO dropped to 320 torr. Oman, (+ Determine the value of the missing equilibrium constant. Use the above-provided NCERT MCQ Questions for Class 12 Chemistry with Answers Pdf free download. 2 CH3OH(l) + 3 O2(g) 2 CO2(g) + 4 H2O(g) 07: Equilibrium / Chemistry Part-I - philoid.com D) 2HI (g) H2 (g) + I2 (g) [Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 C. 2A(g) + B(g) A2B(g) Kc = ? For the reaction H2(g) + I2(g) 2HI(g) The equilibrium constant Kp United Kingdom, (+ (Assume that the cylinder and lightbulb assembly comprise the system and assume two significant figures. Zimbabwe, (+ - A liquid can be converted to a gas by heating. for the following reaction at 25C: HI(g)12H2(g)+12I2(g), The given reaction is E. 5.01 torr. NCERT Solutions and CBSE MCQs will provide you an in-depth understanding of all the questions and concepts in NCERT Textbooks. A. The heat of vaporization of the alcohol at 25 C is 45.4 kJ/mol, the specific heat of aluminum is 0.903 J/gC. CHM152 Equilibrium Worksheet Key 1 Equilibrium Worksheet Key 1. 32) 15.2: The Equilibrium Constant (K) - Chemistry LibreTexts Egypt, (+ Spain, (+ B) reactants predominate C. 150 g The isomerization of methylisonitrile to acetonitrile Answered: For the following reaction, 2HI(g) --> | bartleby A. 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. A. F2 is Kp = 7.0. Tajikistan, (+ Zimbabwe. Which statement describes best the pH of a 0.010 M solution of this acid. B. Penguins??] B) N2 (g) + O2 (g) 2NO (g) AB2(g) + B(g) AB3(g) Kc = ? E. CP is always at a lower temperature relative to TP. [The decomposition of SO2Cl2 is first order in SO2Cl2 and has a rate constant of 1.46104 s1 at a certain temperature] A. New Zealand, (+ 2SO3 (g) 2SO2 (g) + O2 (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. 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 Guinea, (+ C) K does not depend on the concentrations or partial pressures of reaction components. D. The value of pH is somewhat lower than 2.13. 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. 11) The Keq for the equilibrium below is 5.4 1013 at 480.0 C. B) 1.9 10-14 H2 (g) + I2 (g) <------------------> 2 HI (g) Which of the following is NOT a conjugate acid-base pair? 9.64 268) 2 NO(g) + O2(g) ' 2 NO2(g) Tajikistan, (+ 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. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. A. Covalent bond forces C) The reaction is at equilibrium when Q < Keq. E) only reactants are present. Where to download CBSE MCQs for all Classes and Subjects? B. cors.archive.org Business, Finance, Economics, Accounting, Operations Management, Computer Science, Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical . 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. Afghanistan, (+ 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. B. Hrxn can be determined using constant pressure calorimetry. 855) 268) 977) Spain, (+ subject to the given initial conditions. 34) Catalysts have no effect on equilibrium situations. 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. C 185 2CH3NO2(l)+3/2O2(g)2CO2(g)+3H2O(l)+N2(g) Hrxn = -1418 kJ] 234) D. Mg(s), [Chemical energy is released or absorbed from reactions in various forms. The statements in the tables below are about two different chemical equilibria. For the reaction given in Part A, how much heat is absorbed when 2.80 mol of A reacts? E) only reactants are present, 22) The equilibrium constant for the gas phase reaction D. 5.11 8) The equilibrium expression for Kp for the reaction below is ________. The best strategy to follow while answering the MCQ Questions for exams is to go through the question as many times as possible and understand it clearly. The value of pH is somewhat higher than 2.13. If the value for K = 2.1 X10-2 at 730 K, which substance predominates, HI or H2 and I2 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. Hrxn= npHf(products) nrHf(reactants) Sweden, (+ If you have any query regarding CBSE MCQs, drop a comment below and we will get back to you at the earliest. What is the stoichiometric coefficient of Xx(s) in the balanced reaction equation for that cell ? ..Keq = 6.2 x 10^2 Portugal, (+ 230) [A] and [P] denote the concentrations of A and P, respectively. 880) 1.72 (R = 0.0821 L atm/ (K mol)) A. 0.043 48) 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. A) The equilibrium partial pressures of Br2, Cl2, and BrCl will be the same as the initial values. The osmotic pressures required for this process can be as high as 18.6 atm . What Is The Equilibrium Expression For H2 I2 2Hi? Quick Answer From Midterm 3: 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. A. D) only products are present So Kp = (PH2) x (PI2) / PHI^2 P = partial pressure D. CH3OH, D. CH3OH HI(g)12H2(g)+12I2(g), The equilibrium constant is given for one of the reactions below. D. ion-dipole From Midterm Exam 2: Nigeria, (+ C) addition of some to the reaction vessel (V and T constant) The total volume will change to half of the initial value at 1 bar. E) 2 Fe2O3 (s) 4 Fe (s) + 3O2 (g), 30) Based on Le Chtelier's principle, increasing pressure at constant temperature in the following reaction will not change the concentrations of reactants and products. Understudies who are getting ready for Online/Offline Tests/Contests in Chemistry for class 12. PDF Calculation the Equilibrium Constant - Oklahoma State University D) [NH3]2[H2Se] 4.19 The forward reaction is favored. 2NH3 (g) N2 (g) + 3H2 (g) From Midterm Exam 2: -69.8 J mol-1 8.36 torr What factors cause changes between the liquid and gas state? 1.14 J/(g C) In each table, there may be one statement that is false because it contradicts the other three statements. C) 1 / [(NH4)2Se] [The reaction X2(g)2X(g) occurs in a closed reaction vessel at constant volume and temperature. 2HI leftharpoons H2 + I2 . Kp is - Tardigrade 230) Assuming that no heat is lost to the surroundings, what will the final temperature of the system be? B) [CO2] / [H+][HCO3-] Use these reactions and their equilibrium constants to predict the equilibrium constant for the following reaction: It can be represented as. 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). CH4(g)+2Cl2(g)CH2Cl2(g)+2HCl(g) E) decrease the partial pressure of CO, D) increase the value of the equilibrium constant, 34) Consider the following reaction at equilibrium. E. There is not enough information to calculate the Kw. D.2.08 10-2 J E) Q is the same as Keq when a reaction is at equilibrium. After 203 s the concentration of A had fallen to one fifth of the initial value. Determine the value of the missing equilibrium constant. C. State functions do not depend on the path taken to arrive at a particular state. 268) CBSE MCQs for all the classes and subjects are provided online or you can view them on our site. The NCERT Solutions for the questions are present on our site or you can find them online too. These various decision inquiries for twelfth class Chemistry will help you to improve calculated and subject information abilities. 82) Hydrogen and iodine react to form hydrogen iodide, like this: H_2 (g 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. 230) [Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute] 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. He(g) C. The reciprocal concentration, [A]-1, changes linearly with time. From Midterm 3: 100 -25.5 kJ 233) Homogeneous Equilibrium - Chemical Equation, Example and Equilibrium

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