Question

How much metal will be deposited when a current of 12 ampere with 75 efficiency is passed through the cell for 3h? (Given $Z = 4 \times 10^{- 4}$)

• A. $32.4g$
• B. $38.8g$
• C. $36.0g$
• D. $22.4g$

Answer 1

Answer: (B)

$38.8g$

Answer 2

$W = Z \times I \times t$

$= 4 \times 10^{- 4} \times 12 \times \frac{75}{100} \times 3 \times 3600 = 38.8g$