A steady current of 1.5 amp flows through a copper voltameter for 10 minutes. If the electrochemical equivalent of copper is 30 × 10⁻⁵ g coulomb⁻¹, the mass of copper deposited on the electrode will be (a) 0.50 g (b) 0.67 g (c) 0.27 g (d) 0.40 g

Answer: (c). Faraday's first law: m = Z I t. m = 30 × 10⁻⁵ × 1.5 × 600. m = 0.27 g. So the answer is (c) 0.27 g.

A steady current of 1.5 amp flows through a copper voltameter for 10… | NEET 2007 (AIPMT)

Q64NEET 2007 · AIPMTEasy

Electrical Power & Heating Effect

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

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Answer: (c)

Faraday's first law: $m = Z I t$ .
$m = 30 \times 10^{-5} \times 1.5 \times 600$ .
$m = 0.27\ \text{g}$ .
So the answer is (c) 0.27 g.

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