What happens when zinc rod is immersed in copper (II) tetraoxosulphate (VI) solution?

C\(_2\)H\(_4\)(g) + H\(_2\)(g) → C\(_2\)H\(_6\)(g)  ΔH = -137kJ mol-1
The reaction represented above is

How long would it take to deposit 0.08g of copper from CuCl\(_2\) solution by passing a current of 0.5A?
[Cu = 64, 1F = 96500 C mol-1]

Tartaric acid is used industrially to

The salt formed from strong acid and a strong base is?