Question

1) How much time will it Required to deposit
4g of ca during
during electrolysis of moltens
cac2 with a current of 2a​

Answer 1

Answer:

Ca2++2e−→Ca

Number of moles of Ca=40g/mol10g=0.25mol

1 mole Ca requires =2 moles of electrons =2 faradays of electricity.

0.25 mole Ca=2×0.25=0.50 moles of electrons =0.5 faradays of electricity.

Hence, 0.5 Faradays of electricity are required to deposit 10 g of calcium from molten calcium chloride using inert electrodes.