**68. Volume Change Effects on Chemical Equilibria**Each reaction is allowed to come to equilibrium, and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change.a. CO(g) + H₂O(g) ⇌ CO₂(g) + H₂(g) (volume is decreased) - Since the number of moles of gas is the same on both sides of the equation (2 moles reactants vs. 2 moles products), decreasing the volume has no effect on the equilibrium position.b. PCl₃(g) + Cl₂(g) ⇌ PCl₅(g) (volume is increased) - An increase in volume favors the side with more moles of gas. Since there are 2 moles of gas on the reactants side and 1 mole on the products side, the equilibrium will shift to the left.c. CaCO₃(s) ⇌ CaO(s) + CO₂(g) (volume is increased) - Since solids do not count towards the gas volume change, an increase in volume will shift the equilibrium to the right, favoring the production of CO₂(g).

According to Le Chatelier's principle when a chemical equilibrium is disturbed by changing certain…

68. Each reaction is allowed to come to equilibrium, and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change. a. CO(g) + H2O(g)=CO,(g) + H2(g) (volume is decreased) b. PC13(g) + Cl2(8) = PClg(g) (volume is increased) c. CaCO3(s) = CaO(s) + CO2(g) (volume is increased)

68. Each reaction is allowed to come to equilibrium, and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change. a. CO(g) + H2O(g)=CO,(g) + H2(g) (volume is decreased) b. PC13(g) + Cl2(8) = PClg(g) (volume is increased) c. CaCO3(s) = CaO(s) + CO2(g) (volume is increased)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Consider the following reaction at equilibrium:2SO2(g) + O2 (g) <==> 2SO3(g)Determine if the following changes will increase, decrease or not affect the partial pressure of SO2.a. Decreasing the amount of oxygen in the systemb. Decreasing the volume of the systemc. Decreasing the temperature of the systemd. Decreasing the pressure of the systeme. Adding a catalyst to the reaction system
Consider the reaction 2NO (g) + Cl2 (g) → 2NOCI (g), for which Kc = 6.50 × 104 at 35° C. If the starting concentrations of NO, Cl2 and NOCI are 3.60x103 M, 1.25 M and 5.87 M respectively, in which direction will the reaction proceed to reach equilibrium? a. Depends on the pressure Ob. To the right C. To the left d. The reaction is already at equilibrium
CO(g) + H₂O(g) ⇒ H₂(g) + CO₂(g) K = 7.3@823 K A closed 5.0 L container initially holds 3.0 moles CO and 6.0 moles H2O. Calculate the concentrations of each material at equilibrium. What is the equilibrium concentration of H₂O? [H₂O] = [?] M
For the following reaction, 5.0 mol of hydrogen iodide is placed in a 2.0 L container. The concentration of H₂ at equilibrium is 0.001 mol/L. 2HI (g) → H2(g) + I2(g) a. What are the concentrations of the other gases at equilibrium? b. What is the value of the equilibrium constant?
For the reaction 2SO2(g) + O2g) 2SO3(2) If K. = 4.3 x 10° and the following concentrations are present: [SO2] = 0.010 M, [SO3] = 10 M, [O2] = 0.01 M. Which of the following statements is correct? A. The system is at equilibrium B. The system is not at equilibrium and is shifting from left to right C. The system is not at equilibrium and is shifting from right to left D. There is not enough information E. The system is at equilibrium and is shifting from left to right 3.
Consider the reaction A + B C+D, which has an equilibrium constant, K, equal to 3.4 x 102. If one begins a reaction by placing 0.600 moles of A in a 1.0 L container as well as 0.150 moles of 1. B, what will be the equilibrium concentrations of A, B, C, and D? Write your answers in the spaces provided below. a. [А] b. [B]= [C]= С. d. [D]= Once the reaction in problem 1 reaches equilibrium, some additional B is injected into the flask 2. from an outside source. LeChatelier's principle says the reaction will (circle one): be unchanged shift to the right shift to the left Pyridine is a weak base with a Kb 1.7 x 109. If 0.300 moles of pyridine is added to 1.00 L of 3. water, what will be the equilibrium concentrations of the species below: a. [Pyridine] = b. [Pyridine-H] (the pyridinium ion) [ОН-] 3 С. What is the pH of the solution in problem 4 (above)? .
64. Consider this reaction at equilibrium: 2 BRNO(g) = 2 NO(g) + Br2(8) Predict whether the reaction will shift left, shift right, or remain unchanged after each disturbance. a. NO is added to the reaction mixture. b. BINO is added to the reaction mixture. c. Brz is removed from the reaction mixture.
A 1.00 liter flask contained 0.24 mol NO2 at 700 K which decomposed according to the reaction 2 NO2(g) = 2NO(g) + O2(g). At equilibrium the amount of NO was measured to be 0.14 mol, what is the value of Kc? A. 9,6 x 103 B. 1.1 x 102 C. 9.8 x 102 D. 1,4 x 101 E. 5.7 x 103