Question

In a redox reaction, reduction and oxidation takes place simultaneously
a) write the redox reaction in Daniel cell
b) when cuso4 solution stored in iron vessel , the blue colour changes to pale green. Do you agree with it

Answer 1

Answer:

a)Zn(s) → Zn2+(aq) + 2e− (at anode)

Cu2+(aq) + 2e− → Cu(s) (at cathode)

Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s) (overall reaction)

b)Iron being more reactive than copper displaces it from copper sulphate forming ferrous sulphate and copper. in short,displacement reaction will take place. This is because Iron can react with Copper Sulphate.

CuSO4(blue)+Fe= FeSO4(green)+ Cu