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Electrochemistry

Question
CBSEENCH12005881
Wired Faculty App

Write the electrode reaction taking place during the use of a dry cell.

Solution

Answer:

Anode: Zn + Zn2+ → 2e
Cathode: MnO2(s) + NH4+ + e– →MnO(OH) (s) + NH3 (aq)

Some More Questions From Electrochemistry Chapter

Can you store copper sulphate solutions in a Zinc pot?

Why does the conductivity of a solution decrease with dilution?

Suggest a way to determine the Λ°m value of water.

The molar conductivity of 0.025 mol L–1 methanoic acid is 46.1 S cm2 mol–1. Calculate its degree of dissociation and dissociation constant. Give λ°(H+) = 349.6 S cm2 mol–1 and λ° (HCOO– ) = 54.6 s cm2 mol–1.

If the current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons flow through the wire?

Suggest a list of metals that are extracted electrolytically.

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