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NEET · Chemistry · Electrochemistry
What is the chemical reaction that occurs in a Daniell cell to...
What is the chemical reaction that occurs in a Daniell cell to convert chemical energy into electrical energy?
Options
- AZn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s)
- BZn(s) + 2Cu2+(aq) → Zn²⁺(aq) + 2Cu(s)
- CZn²⁺(aq) + Cu(s) → Zn(s) + Cu²⁺(aq)
- DCu(s) + Zn²⁺(aq) → 2Cu2+(aq) + Zn(s)
Correct answer
A. Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s)
Step-by-step solution
Daniell cell converts the chemical energy liberated during the redox reaction Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s) to electrical energy and has an electrical potential equal to 1.1 V when concentration of Zn²⁺ and Cu²⁺ ions is unity.