Register to reply

[Chemistry] Membrane Potential

by jkh4
Tags: chemistry, membrane, potential
Share this thread:
Apr1-07, 11:29 AM
P: 51
1. The problem statement, all variables and given/known data

Given the following half-reactions:
Ce4+ + e− → Ce3+ E = 1.72 V
Fe3+ + e− → Fe2+ E = 0.771 V

A solution is prepared by mixing 7.0 mL of 0.30 M Fe2+ with 8.0 mL of 0.12 M Ce4+.

Calculate [Ce4+] in the solution.

I've got the potential of a platinum electrode dipped into the resulting, equilibrated, solution (relative to SHE) to be 0.767 V, and keq of 1.110^16 from this equation: Ce4+ + Fe2+ ⇌ Ce3+ + Fe3+.

How do you get [Ce4+]? Why isn't that the same as the concentration posted in the question?

Phys.Org News Partner Science news on
World's largest solar boat on Greek prehistoric mission
Google searches hold key to future market crashes
Mineral magic? Common mineral capable of making and breaking bonds

Register to reply

Related Discussions
E-potential in cell membrane.. HELPP PLEAASEE! Advanced Physics Homework 5
Membrane potential Biology, Chemistry & Other Homework 1
Question about membrane potential Biology 13
[Chemistry] Calculation of Pt potential Biology, Chemistry & Other Homework 1
Membrane fluidity Biology 1