Question

A current of $0.5A$ is passed through molten $AlC{l}_3$ for 40 min. Calculate the mass of aluminium deposited at the cathode (Gram Atomic Mass of Al = 27g)

• A. 0.111 gm
  
• B. 0.110 gm
  
• C. 0.114 gm
  
• D. 0.112 gm

Answer 1

The correct option is D 0.112 gm

$\frac{W}{E}=\frac{Q}{F}=\frac{i.t}{F}$

$\frac{W}{\frac{27}{3}}=\frac{0.5\times 40\times 60}{96500}$

$\therefore W=0.112g$