How Does Electrochemistry Calculate the Solubility of AgI?

Click For Summary
SUMMARY

The discussion focuses on calculating the solubility of silver iodide (AgI) using the Nernst equation. The standard potential of the cell is given as +0.9509 V at 25°C, while the standard reduction potential for Ag+ is 0.7991 V. The user incorrectly interprets the result of -18.51 as the natural logarithm of the solubility, when it is actually the decimal logarithm. The correct approach involves using the Nernst equation to derive the natural log of the solubility (ln s) accurately.

PREREQUISITES
  • Nernst equation application
  • Understanding of standard reduction potentials
  • Knowledge of solubility product constants (Ksp)
  • Basic electrochemistry principles
NEXT STEPS
  • Review the Nernst equation and its applications in electrochemistry
  • Study the calculation of solubility products (Ksp) for ionic compounds
  • Learn about standard reduction potentials and their significance
  • Practice problems involving the conversion between natural and decimal logarithms in solubility calculations
USEFUL FOR

Chemistry students, electrochemists, and anyone interested in the quantitative analysis of solubility in electrochemical systems.

koomanchoo
Messages
8
Reaction score
0
hey i seem to be having a lot of trouble qith this question may i get some help?
The standard potential of the cell below is + 0.9509 V at 25 oC. Calculate the solubility, normally called s, of AgI (Note: Enter the natural log of s (ln s) as your answer)

Ag|AgI(s)|AgI(aq)|Ag

i'm using nernst equation and found the standard potential for Ag+,Ag to be 0.7991V

i am using Eo as 0.7991 and E as 0.9509 and rearanging the equation to find the solubility as LnS.. the correct answer is suppose to be -18.51.. where i am going wrong? please help.
thanks

n.b standard reduction potential of AgI(s) is -.15V
 
Last edited:
Physics news on Phys.org
IIRC -18.51 is not a natural log of the AgI solubility product - it's decimal log.
 

Similar threads

Chemistry How to find the pH of a galvanic cell (MIT OCW problem set)
  • · Replies 2 ·
Replies
2
Views
4K
Chemistry How to apply Nernst equation in this problem?
  • · Replies 3 ·
Replies
3
Views
3K
Why Do Standard Reduction Potentials Differ in Textbooks?
  • · Replies 6 ·
Replies
6
Views
3K
How to Calculate Ksp for Ag2SO4 Using Electrochemistry?
  • · Replies 1 ·
Replies
1
Views
10K
Electrolytic Cell Problem - Can't calculate req'd voltage
  • · Replies 2 ·
Replies
2
Views
3K
What Is the Voltage of This Voltaic Cell at 298 K with Given Concentrations?
  • · Replies 3 ·
Replies
3
Views
10K
Calculating Ecell and Voltage Across a Galvanic Cell | Nernst Equation Problem
  • · Replies 1 ·
Replies
1
Views
3K
Calculating Cell Potential Using Nernst Equation for Ag+ Voltaic Cell
  • · Replies 4 ·
Replies
4
Views
6K
Verifying Nernst Equation Calculation: Pb2+ and Ag+
  • · Replies 1 ·
Replies
1
Views
5K
Calculate [Ag+] in Test Solution with Nernst Eq. (Chem 102 Lab)
  • · Replies 2 ·
Replies
2
Views
5K