Question

The standard electrode potential for Daniell cell is 1.1 V. Calculate the standard Gibbs energy change for the reaction:

Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s)

Hint:

Always check the sign. A spontaneous redox reaction (like in a galvanic cell) must have a positive E°cell and a negative ΔG°. Ensure the units are consistent. Usually, the formula gives the value in joules, so divide by 1000 to convert it into kilojoules.

Answer 1