The standard electrode potential of ` Zn^(2+) // Zn` is -0.76V and that of `Ca^(2+) // Cu` is 0.34V . The emf(V) and the free energy change ` (kJ "mol"^(-1))` , respectively , for a Daniel cell will be

Options

A. 1.10 V
B. 0.42 V
C. `-1.1 V`
D. `-0.42 V`

Answer

A

Explanation

Properties of ionic solid