0.5 farady of electricity is passed through CaCl2, the amount of calci

1.	0.5 farady of electricity is passed through CaCl2, the amount of calcium metal deposited on electrode is? A) 10gB) 20gC)30gD)40g
Answer» ANSWER CA 2+ +2e − →Ca Number of moles of Ca= 40g/mol 10g =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

0.5 farady of electricity is passed through CaCl2, the amount of calcium metal deposited on electrode is? A) 10gB) 20gC)30gD)40g

Answer»

ANSWER

+2e

−

→Ca

Number of moles of Ca=

40g/mol

10g

=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