Question

Write the anode and cathode reactions for dry cell

Answer 1

Hey mate.

Re: Dry cell cathode reaction??

At the anode: Zn(s) → Zn2+(aq) + 2e- [e° = -1.04 volts]

At the cathode: 2MnO2(s) + 2 e- + 2NH4Cl(aq) → Mn2O3(s) + 2NH3(aq) + H2O(aq) + 2 Cl- [e° ≈ +.5 v]

Answer 2

Answer:

Anode: Zn→Zn2+ + 2e-

Cathode: MnO2 + NH4+ + e- → MnO(OH) + NH3

Explanation:

This is the right answer, and for the full explanation for dry cell please refer pg no: 86 in 12th std NCERT text book part 1. Thank you.