Please answer these questions on your Page 8 HA(aq) is a weak acid with a dissociation constant, K₁, of 7.7 x 10-¹2. What is the pH of a 0.011 M solution of A-(aq)? The temperature is 25°C. (b) For the reaction A(g) = A(1), the equilibrium constant is 0.666 at 25.0°C and 0.111 at 75.0°C. Making the approximation that the entropy and enthalpy changes of this reaction do not change with temperature, at what temperature will the equilibrium constant be equal to 0.777?

Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter8: Acids And Bases
Section: Chapter Questions
Problem 8.112P: 8-112 Consider an initial 0.040 M hypobromous acid (HOBr) solution at a certain temperature. At...
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Please answer these questions on your Page 8
(a)
HA(aq) is a weak acid with a dissociation constant, Ka, of 7.7 x 10-¹2. What is the pH of
a 0.011 M solution of A-(aq)? The temperature is 25°C.
(b)
For the reaction A(g) A(1), the equilibrium constant is 0.666 at 25.0°C and 0.111 at
75.0°C. Making the approximation that the entropy and enthalpy changes of this reaction do not
change with temperature, at what temperature will the equilibrium constant be equal to 0.777?
Transcribed Image Text:Please answer these questions on your Page 8 (a) HA(aq) is a weak acid with a dissociation constant, Ka, of 7.7 x 10-¹2. What is the pH of a 0.011 M solution of A-(aq)? The temperature is 25°C. (b) For the reaction A(g) A(1), the equilibrium constant is 0.666 at 25.0°C and 0.111 at 75.0°C. Making the approximation that the entropy and enthalpy changes of this reaction do not change with temperature, at what temperature will the equilibrium constant be equal to 0.777?
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