Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Chemical Sciences Electrochemistry Electrochemical Cells
The standard emf for the cell reaction,
Zn + Cu2+ → Cu + Zn2+
is 1 ∶ 10 V at 25°C. The emf for the cell reaction, when 0.1 M cu2+ and 0.1 M Zn2+ solutions are used at 25°C is
1
1.10 V
2
-1.10 V
3
2.20 V
4
-2.20 V