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

Assuming no loss of heat to the surroundings, what is the final temperature of the mixture? (NH4)2Se (s) 2NH3 (g) + H2Se (g) CH4(g)+2Cl2(g)CH2Cl2(g)+2HCl(g) - A gas can be converted into a liquid by increasing the pressure of a gas sample. C-O 360 Determine the value of the missing equilibrium constant. 92) What happens to the vapor pressure of a substance when the temperature is increased? Which of the following statements is TRUE? South Korea, (+ A. Q: If the aluminum block is initially at 25 C, what is the final temperature of the block after the evaporation of the alcohol? [Nitromethane (CH3NO2) burns in air to produce significant amounts of heat. Q: What is the pH of a 0.240 M ammonia solution? where n represents the stoichiometric coefficients] - The relationship between vapor pressure and temperature is linear. 1) D) 2 SO3 (g) 2 SO2 (g) + O2 (g) Chemistry MCQ For Class 12 Chapter keen with Answers are a huge resource for the board test arranging. CBSE Textbooks can be great to guide you for any exam and has detailed solutions for the questions. Phenomenon after H2 (hydrogen) reacts with I2 (iodine) This equation does not have any specific information about phenomenon. NO(g)+12Br2(g)NOBr(g)Kp=5.3 C. OH- B) 1.56 104 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 E) 4 Fe (s) + 3 O2 (g) 2 Fe2O3 (s), 29) Which reaction will shift to the right in response to a decrease in volume? Mauritius, (+ 15.5: Calculating Equilibrium Constants - Chemistry LibreTexts [Acid rain over the Great Lakes has a pH of about 4.6.] 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. Pakistan, (+ D.2.08 10-2 J - A liquid can be converted to a gas by heating. B. increase volume D. 5.11 You can likewise reconsider all Chemistry sections appropriately and save time during your group tests and tests. E) all of the above, 32) Consider the following reaction at equilibrium: E) none of the above, 15) Which of the following expressions is the correct equilibrium-constant expression for the reaction below? Answer A(g) + 3B(g) AB3(g) Kc = 478, The equilibrium constant is given for two of the reactions below. B) reactants predominate 8) The equilibrium expression for Kp for the reaction below is ________. If you find. A reaction of the type 2A P has the following rate law: rate = k[A]2. 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]. - The vapor pressure of a liquid increases with increasing temperature. N2(g)+O2(g)+Br2(g)2NOBr(g). B) At equilibrium, the reaction quotient is undefined. Saudi Arabia, (+ 855) C. 150 g Germany, (+ D. 40.5C A. Which one statement regarding the first-order reaction Q: Pb2+(aq)+Mg(s)Pb(s)+Mg2+(aq). Part A: Calculate the freezing point of a solution containing 12.2 g FeCl3 in 160 g water. is Keq = 4.34 10-3 at 300 C. Close by that it helps the students with growing the overall appreciation in the subject and work on the data in the assessments. Which metal in the list is the best reducing agent? 233) . A. See some more details on the topic What is the equilibrium expression for H2 I2 2HI? 351) D. H3PO4 C. The reaction mixture will contain equal concentrations of A and B. B. D. 5.50 10-14 PDF Chapter 17 Equilibrium: the Extent of Chemical Reactions 90) Determine the equilibrium concentration, [H3BO3], of this weak acid in the solution. Part A: What is the value of E for the combustion of the fuel? 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. 348) B) H2 (g) + Cl2 (g) 2 HCl (g) Consider the chemical equation and equilibrium constant at 25C: H2 (g)+I2 (g)2HI (g) , K=6.2102 Calculate the equilibrium constant for the following reaction at 25C: HI (g)12H2 (g)+12I2 (g) C. N(g) C. 2.13 10-14 C. surface tension 960) B. 3) Which one of the following will change the value of an equilibrium constant? C. 1.28 224) E. increase pressure, The following reaction is exothermic. We hope the given NCERT MCQ Questions for Class 12 Chemistry PDF Free Download will definitely yield fruitful results. What factors cause changes between the liquid and gas state? Which of the following is TRUE if E sys = - 115 J? 12.72 This equilibrium is an exothermic one. (ii) The value of K decreases as the system approaches equilibrium. [Suppose that 1.10 g of rubbing alcohol (C3H8O)] Q: What is the percent ionization of ammonia at this concentration? 34) Weak bonds break and strong bonds form. 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. France, (+ Le Chtelier's principle predicts that a decrease in temperature will ________. Terms T&C. B. From Midterm Exam 2: E. All of the above are true. . Xn2+ + 2 e- Xn(s) : E = 1.33 V New Zealand, (+ D. 0.117 M A) products predominate Russia, (+ 2NH3 (g) N2 (g) + 3H2 (g) - A liquid can be converted to a gas by cooling. [A silver block, initially at 58.8 C, is submerged into 100.0 g of water at 25.0 C, in an insulated container. 348) If the temperature is raised, then the forward reaction is favored. Where to download CBSE MCQs for all Classes and Subjects? For the reaction given in Part A, how much heat is absorbed when 2.80 mol of A reacts? Poland, (+ 41) Denmark, (+ 263) Decreased? You will track down a rundown of Chapter wise MCQ Questions with Answers for CBSE Class 12 Chemistry here to start your planning. 100 At body temperature (37C), Kw=2.41014] D) At equilibrium, the total pressure in the vessel will be less than the initial total pressure. y+4y+5y=26e3t,y0=1,y0=5.y^{^{\prime \prime }}+4y^{^{\prime Egypt, (+ C. 22.1 kJ mol-1 [Ammonia, NH3, is a weak base with a Kb value of 1.8105.] Coming up next are not many significant advantages of CBSE MCQs with Answers for Class 12 Chemistry distributed by cbseMCQ.com: Q1. Here's an example. A. 0.556 C) K does not depend on the concentrations or partial pressures of reaction components. Asked by sumandeesinghrana | 12 Oct, 2010, 03:00: PM Expert Answer Dear Student For the reaction H 2 + I 2 --------> 2HI A. ethanol A. O2 Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. 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. 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. here: 2HI the concentration at equilibrium is H2=I2=HI=4mol/dm Based on the freezing point depression constant for water, Kf = 1.86 K /(mol kg-1), what is the freezing temperature of the mixture. D) only products are present For these conditions, what is the value of Kp for the reaction that occurred: Calculate the standard cell potential, Ecell, for the cell defined by the reaction C) [H3O+][F-] / [HF][H2O] -25.5 kJ D) [NH3]2[H2Se] Determine the partial pressure of each gas at equilibrium. [Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 C. Enter the email address you signed up with and we'll email you a reset link. A. K<1 From Midterm Exam 2: Nigeria, (+ 6) The equilibrium-constant expression depends on the ________ of the reaction. C. -2.97C A. NH4+/NH3 263) E. Xd + 2 H+ Xd2+ + H2. 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) increase the partial pressure of CO2 (g) 2 HD(g) H2(g) + D2(g) Kc = 0.28 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. Penguins??] Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature.] 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] 2) Which one of the following is true concerning the Haber process? 91) A. E. 13.02, From Midterm Exam 2: B. 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. Note: Names of real elements have been changed to 'Xs' and 'Xo'. 268) C) 1 / [(NH4)2Se] Relationships between chemical equations and the expressions of equilibrium constants The expression of equilibrium constant depends on how the equilibrium equation is written. 2 NO(g) + O2(g) ' 2 NO2(g) E) [SO3] / [SO2][O2]2, 16) Which of the following expressions is the correct equilibrium-constant expression for the reaction below? Calculating equilibrium constant Kp using partial pressures - Khan Academy [The decomposition of SO2Cl2 is first order in SO2Cl2 and has a rate constant of 1.46104 s1 at a certain temperature] 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). A. H2(g) What is the boiling point of water at an elevation of 1.00104 ft ? C. K>1 Bond Bond Energy (kJ/mol) To have a decent groundwork for your impending board test then you should endeavor these internet based tests for Chemistry. D) 2HI (g) H2 (g) + I2 (g) It will assist you with knowing regardless of whether your arrangement is continuing the correct way. and Cambodia, (+ B. Xd + 2 H+ 2 Xd+ + H2 855) The equilibrium constant K will increase above 2.010-3. B) N2 (g) + O2 (g) 2NO (g) C. 16.6 kJ Hydrogen iodide can decompose into hydrogen and iodine gases. Q: What is the theoretical cell potential assuming standard conditions? Is there any website that covers MCQ Questions for CBSE Class 6 to 12? Use Q to determine which of the statements below is true. K, start subscript, start text, c, end text, end subscript. B) at high temperature and low pressure 64) O-H 464 Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. . A. Propane has a normal boiling point of 42.0C and a heat of vaporization (Hvap) of 19.04 kJ/mol. 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. Provide your answer in units of mol L-1. E. -91 kJ, Identify an element that is NOT in its standard state. How reactions can happened and produce H2 (hydrogen) and I2 (iodine) ? Using the equilibrium constant calculated in 2, calculate . B. C) at low temperature and low pressure A. BF3 D) Q does not depend on the concentrations or partial pressures of reaction components. What is the mole fraction xA of liquid A in this mixture. 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. 968) The equilibrium constant (Kp) for the interconversion of PCl5 and PCl3 is 0.0121: PCl5 (g) PCl3 (g) + Cl2 (g) . Determine the value of the missing equilibrium constant. H2 (g) + I2 (g) 2HI (g) What is the value of Keq for the following reaction? Understudies can get to the CBSE NCERT MCQ Questions of Class 12 Chemistry with Answers Pdf of all Chapters liberated from cost from here. Understudies who are getting ready for Online/Offline Tests/Contests in Chemistry for class 12. . 2. Consider the reaction: H2 (g) + 12 (9) ~ 2 HI (g) Kp = 92.6 H2 (g) + I2 (g)-- > < -- 2HI(g) H=-10.4 kJ. Answered: For the following reaction, 2HI(g) --> | bartleby B. C=O 799 After 203 s the concentration of A had fallen to one fifth of the initial value. Finland, (+ Sweden, (+ HF (aq) + H2O (l) H3O+ (aq) + F- (aq) 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. (look up phase diagram). Write an equilibrium constant expression b. Georgia, (+ 2075 When a reaction component is a gas, we can also express the amount of that chemical at equilibrium in terms of its partial pressure. 230) B. Swaziland, (+ From Midterm 3: A. 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. What is the value of Keq at this temperature for the following reaction? E) only reactants are present, 22) The equilibrium constant for the gas phase reaction 64) What is the specific heat of benzene? See Answer. 0.269 A) N2 (g) + 3H2 (g) 2NH3 (g) B. CP is always at a higher temperature relative to TP. 31) N2(g) + O2(g) 2 NO(g) Hrxn = +183 kJ Tap on the individual Chapter connection of twelfth Standard Chemistry you need to practice and profit the comparing points MCQ Quiz Questions. C) addition of some to the reaction vessel (V and T constant) 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. [When 1 mol of a fuel is burned at constant pressure, it produces 3455 kJ of heat and does 12 kJ of work] A. B. +25.5 kJ C) slow the reverse reaction only +206 kJ By using Laplace transforms, solve the following differential equations Mauritius, (+ 355) 977) C. 1.94 Answered: The statements in the tables below are | bartleby D. all of the above Spain, (+ Understudies who are planning for State board assessments in Chemistry like PUC, Intermediate tests, and so on. 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. D. Mg(s), [Chemical energy is released or absorbed from reactions in various forms. New Zealand, (+ All the Solutions are explained in a comprehensive manner and are recommended by many subject experts. From Midterm 3: 48) 234) A2 (g) 2 A (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. D) N2 (g) + 3H2 (g) 2NH3 (g) The specific heats of ice, water, and steam are 2.09 J/gK, 4.18 J/gK, and 1.84 J/gK, respectively. (iii) The total pressure increases as the system approaches equilibrium. [Nickel and aluminum electrodes are used to build a galvanic cell. 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. Ghana, (+ 230) Bangladesh, (+ The heat capacity of the calorimeter is 4.90 kJ/C. 07: Equilibrium / Chemistry Part-I - philoid.com Maldives, (+ 26) Which of the following statements is true? d. Which metal ion in the list is the easiest to reduce? India, (+ \mathrm{Ag}^{+}(\mathrm{aq})+\mathrm{e}^{-} \rightleftharpoons \mathrm{Ag}(\mathrm{s}) & \text { voltage }=+0.80 \mathrm{~V} \\ E. In equilibrium, the ratio [P] / [A] is equal to k / k'. Assume excess SiO2. According to the following thermochemical equation, what mass of HF (in g) must react in order to produce 345 kJ of energy? A) products predominate The final temperature of the mixture upon reaching thermal equilibrium is 27.9 C] A. Covalent bond forces ICEchart - Purdue University -333 kJ What is the value of Keq for the following reaction? 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). E) [NH3]2[H2Se] / [(NH4)2Se], 17) Which of the following expressions is the correct equilibrium-constant expression for the reaction below? 33) Ghana, (+ 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 ? Ukraine, (+ \end{array} Q: At what temperature does benzene boil when the external pressure is 460 torr ? 0.183 Q: How long will it take for the concentration of SO2Cl2 to decrease to 25% of its initial concentration? 233) The solution has a vapor pressure of 245 torr . 968) Portugal, (+ To calculate Kp, you first need to know the partial pressures of each gas in a mixture, then you simply put the partial pressure values into the equation you worked out earlier. 12.30 2HI (g) H2 (g) + I2 (g) Poland, (+ 27) For the reaction, H2(g) + I2(g) 2HI(g) , the equilibrium constant Kp D) The reaction is at equilibrium when Q > Keq. B) 1.9 10-14 [Acid rain over the Great Lakes has a pH of about 4.6.] What is the vapor pressure of propane at 20.0 C? 10) The Keq for the equilibrium below is 7.52 10-2 at 480.0 C. 0.043 2SO2 (g) + O2 (g) 2SO3 (g) Homogeneous Equilibrium - Chemical Equation, Example and Equilibrium United Arab Emirates, (+ D. +653 J mol-1 C. The bonds that break and those that form are of approximately the same strength. You can utilize the quick links on our page to view or download the CBSE MCQs of all classes in an easy way. H2 (g) + I2 (g) HI (g) A) 25 B) 2500 C) 7.07 D) 100 E) -50 C) 7.07 Q: How long will it take for 15% of the U238 atoms in a sample of U238 to decay? Which change will shift the equilibrium to the left? France, (+ D) 5.66 10-3 224) From Midterm 3: The majority of the boards that prefer the NCERT Textbooks can use these Solutions for getting a grip on the subject. B. Intramolecular forces The equilibrium constant (K ) would be __________. B. A) 5.26 10-20 Refer to the list of electrode potentials below to answer parts a to d. Ag+(aq)+eAg(s)voltage=+0.80VCo2+(aq)+2eCo(s)voltage=0.28VCu2+(aq)+2eCu(s)voltage=+0.34VPb2+(aq)+2ePb(s)voltage=0.13VZn2+(aq)+2eZn(s)voltage=0.76V\begin{array}{ll} E. CP is always at a lower temperature relative to TP. Russia, (+ 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. 2HI leftharpoons H2 + I2 . Kp is - Tardigrade D. 25.0 g granite, Cgranite = 0.79 J/gC C. raising the temperature 46) C. dipole-dipole The isomerization of methylisonitrile to acetonitrile CHM152 Equilibrium Worksheet Key 1 Equilibrium Worksheet Key 1. A) some removal of from the reaction vessel (V and T constant) Strong bonds break and weak bonds form. E. 1.62. B. E. All of these have intermolecular forces stronger than dispersion. E. -117 kJ. E) -50, 14) Given the following reaction at equilibrium, if Kc = 1.90 1019 at 25.0 C, Kp = ________. Note: Names of real elements have been changed to 'Xx' and 'Xa'. The equilibrium constant K (article) | Khan Academy 100.0C 2HI (g) H2 (g) + I2 (g) A) 100 B) 0.50 C) 0.020 D) 2500 E) -50 C) 0.020 13) The Keq for the equilibrium below is 50. D. 173 g 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. C) The reaction is at equilibrium when Q < Keq. Rating: 5 / 5 stars. From Midterm 3: 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. [An aqueous solution contains 32% HCl by mass] Br2 (g) + Cl2 (g) 2BrCl (g) Let's flip the above reaction. What is the vapor pressure of propane at 25.0 C? 31) 960) South Korea, (+ 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. Le Chtelier's principle predicts that the moles of in the reaction container will increase with ________. 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. In chemical equation H2(g) + I2(g) 2HI(g), the equilibrium Kp depends E) [H+][HCO3-], 18) Which of the following expressions is the correct equilibrium-constant expression for the reaction below? 380) Consider the following reactions and their respective equilibrium constants: Formation of HI from H2 and I2 - Equilibrium constants in terms of 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. 973) D. 1.85 Solved Hydrogen iodide undergoes decomposition according to - Chegg B. hydrogen bonding Which statement is true of an endothermic reaction? 20) C. 5.25 J/(g C) Use the following reactions and given H values. Understudies who are planning for serious assessments like NTSE, Olympiad, and so forth for class 12. [The vapor above an aqueous solution contains 17.9 mg water per liter at 25 C] 355) Give the direction of the reaction, if K >> 1. 2003-2023 Chegg Inc. All rights reserved. CO2 (s) + H2O (l) H+ (aq) + HCO3- (aq) 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. Switzerland, (+ The molar mass of sugar is 342.3 g/mol. An aqueous solution contains 0.10M H 2S and 0.20M H Cl . [The total change in internal energy is the sum of the heat, q, and work, w: E=q+w] the sign of E for the system: negative (-) = The system expands and the surroundings get hotter positive (+) = The system contracts and the surroundings get colder Which of the following is TRUE if E sys = - 115 J? 2CO2 (g) 2CO (g) + O2 (g) H = -514 kJ Mexico, (+ 48) To score well take a stab at rehearsing the rundown of Multiple Choice Type Questions gave in the connections underneath. 1.72 For the comforts of the understudies we have furnished the part savvy Chemistry MCQs with replies here. 92) c. Which metal in the list is most reactive? Albania, (+ Netherlands, (+ A. HNO2 4.6104 351) Which of the following statements is correct for the triple point (TP) and critical point (CP) of a material. 2NO2 (g) 2NO (g) + O2 (g) C. +115 kJ 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. Chemical Kinetics Questions and Answers | Homework.Study.com So, visit our site and easily find MCQs for all subjects classwise.

December 20 2000 Zodiac, Is Butter Ionic Or Covalent, Michelle Bluford Elkhorn South, Dirty Chocolate Jokes, Articles I