Question

When electricity is passed through a solution of AlCl3 13.5 g of Al is deposited. The number of faradays mustbe(1) 1.0 (2) 1.5 (3) 0.5 (4) 2

Answer 1

Answer:

Explanation:

the reaction at cathode is

Al ( 3+) + 3e---------->Al. (n=3)

→applying the equation

w = E×i×t/F

by substituting the values

♦ i × t =

13.5 /(27/3)×F

=13.5/9 ×F

=1.5 F