Saved Bookmarks
| 1. |
Write the name of the cell which is generally used in hearing aids. Write the reactions taking place at the anode and cathode of this cell. |
|
Answer» A mercury battery, used for hearing aids and electric watches, delivers a constant voltage of 1.35 V for long periods. The half-reactions are Anode: Zn (Hg) + 2 OH ̶ → ZnO (s) + H2O + 2e ̶ Cathode: HgO + H2O + 2e ̶ → Hg (l) + 2 OH ̶ |
|