a. Why Lambda{m} ^ 0 for CH3COOH cannot be determined experimentally? b. Why does a galvanic cell stop working after sometime?

Question

a. Why Å_m⁰ for CH₃COOH cannot be determined experimentally? 

b. Why does a galvanic cell stop working after sometime?

Answer 1

In a galvanic cell, the transfer of electrons from anode to cathode leads to a net positive charge around the anode and a net negative charge around the cathode. The positive charge around anode prevents electrons to flow out from it so the potential difference becomes zero and the cell stops after sometime.