Current Electricity - Result Question 51

54. A steady current of $1.5 amp$ flows through a copper voltameter for 10 minutes. If the electrochemical equivalent of copper is $30 \times 10^{-5} g coulomb^{-1}$, the mass of copper deposited on the electrode will be

[2007]

(a) $0.50 g$

(b) $0.67 g$

(c) $0.27 g$

(d) $0.40 g$.

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Answer:

Correct Answer: 54. (c)

Solution:

  1. (c) We have, $m=$ ZIt

where, $Z$ is the electrochemical equivalent of copper.

$\Rightarrow m=30 \times 10^{-5} \times 1.5 \times 10 \times 60$

$=0.27 gm$.