Question

Q.Write the Nernst equation and emf of the following cells at 298 K :
1. Mg | mg 2+ ( 0.001 M ) || Cu 2+ ( 0.0001 M ) Cu
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Answer 1

HINT:

E° cell = E(cathode )- E (anode)

= 0.34-(-2.36) = 0.34+ 2.36= 2.7

log[Mg²] = 0.001/ 0.0001 = log 10 = 1

————

[Cu²]