Calculate AG, at 298K, for the dissociation of lead(II) iodide in water given that the equilibrium constant is 1.4 x 108.

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...
icon
Related questions
Question
### Calculation of ΔG° for the Dissociation of Lead(II) Iodide in Water

**Problem Statement:**

Calculate ΔG° at 298K for the dissociation of lead(II) iodide in water given that the equilibrium constant is 1.4 x 10⁻⁸.

**Options:**

A. 45 kJ  
B. 18 kJ  
C. 1125 kJ  
D. 2478 kJ  
E. 137 kJ  

To solve this problem, you need to use the relationship between the Gibbs free energy change (\(\Delta G°\)) and the equilibrium constant (K) as given by the equation:

\[
\Delta G° = -RT \ln K
\]

Where:
- \(R\) is the gas constant, which is approximately 8.314 J/(mol·K).
- \(T\) is the temperature in Kelvin.
- \(K\) is the equilibrium constant.

Given:
- \(T = 298\) K
- \(K = 1.4 \times 10^{-8}\)

Calculate \(\Delta G°\) as follows:

1. Convert K into natural logarithm form.
2. Multiply by the gas constant and temperature.
3. Adjust units to kJ.

This understanding will help you arrive at the correct option from the provided multiple choices.

*Note: The above details are for educational purposes to help understand the thermodynamic calculation involved in chemical equilibrium.*
Transcribed Image Text:### Calculation of ΔG° for the Dissociation of Lead(II) Iodide in Water **Problem Statement:** Calculate ΔG° at 298K for the dissociation of lead(II) iodide in water given that the equilibrium constant is 1.4 x 10⁻⁸. **Options:** A. 45 kJ B. 18 kJ C. 1125 kJ D. 2478 kJ E. 137 kJ To solve this problem, you need to use the relationship between the Gibbs free energy change (\(\Delta G°\)) and the equilibrium constant (K) as given by the equation: \[ \Delta G° = -RT \ln K \] Where: - \(R\) is the gas constant, which is approximately 8.314 J/(mol·K). - \(T\) is the temperature in Kelvin. - \(K\) is the equilibrium constant. Given: - \(T = 298\) K - \(K = 1.4 \times 10^{-8}\) Calculate \(\Delta G°\) as follows: 1. Convert K into natural logarithm form. 2. Multiply by the gas constant and temperature. 3. Adjust units to kJ. This understanding will help you arrive at the correct option from the provided multiple choices. *Note: The above details are for educational purposes to help understand the thermodynamic calculation involved in chemical equilibrium.*
Expert Solution
Step 1

The standard Gibbs free energy and equilibrium constant are related by the following formula.

Chemistry homework question answer, step 1, image 1

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Structure and Dynamics of Macromolecules
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY