The formation constant, Kf, of Ni(CN)²(aq) Ni2+ (aq) + 4 CN- (aq) Ni(CN)2(aq) is 2.1 x 10³1. We dissolve 0.0555 mol of Ni(NO3)2 in 1.000 L of a 0.666 M solution of NaCN. Make the approximation that the volume remains fixed at 1.000 L. What will be the concentrations of Ni²+ (aq), CN- (aq), and Ni(CN)2-(aq) at equilibrium? The temperature is 25.0 °C.

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy
Section: Chapter Questions
Problem 44PS
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(a)
(b)
The formation constant, Kƒ, of Ni(CN)²(aq)
Ni²+ (aq) + 4 CN¯(aq) — Ni(CN)²¯ (aq)
is 2.1 x 10³1. We dissolve 0.0555 mol of Ni(NO3)2 in 1.000 L of a 0.666 M solution of NaCN. Make
the approximation that the volume remains fixed at 1.000 L. What will be the concentrations of
Ni²+(aq), CN¯(aq), and Ni(CN)²¯(aq) at equilibrium? The temperature is 25.0 °C.
For the reaction 2 A(g) ⇒ B(g) + 3 C(g), we begin with only pure A(g) and the total
pressure is 8.00 atm. We attain equilibrium. At equilibrium, the total pressure is 12.00 atm. What
is the value of AGº for this reaction? The temperature is 25.0 °C throughout.
Transcribed Image Text:(a) (b) The formation constant, Kƒ, of Ni(CN)²(aq) Ni²+ (aq) + 4 CN¯(aq) — Ni(CN)²¯ (aq) is 2.1 x 10³1. We dissolve 0.0555 mol of Ni(NO3)2 in 1.000 L of a 0.666 M solution of NaCN. Make the approximation that the volume remains fixed at 1.000 L. What will be the concentrations of Ni²+(aq), CN¯(aq), and Ni(CN)²¯(aq) at equilibrium? The temperature is 25.0 °C. For the reaction 2 A(g) ⇒ B(g) + 3 C(g), we begin with only pure A(g) and the total pressure is 8.00 atm. We attain equilibrium. At equilibrium, the total pressure is 12.00 atm. What is the value of AGº for this reaction? The temperature is 25.0 °C throughout.
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