NEET 2026 — Chemistry solution

NEET2026Chemistry

A solution of copper sulphate is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at cathode is :

(Given : Molar mass of Cu = 63 g mol $^{- 1}$ ; 1F = 96487 C mol $^{- 1}$ )

Solution

By Faraday’s first law, $w = \frac{E}{F} \times I \times t = \frac{M / n}{F} \times I \times t$ .

For Cu (n = 2): $w = \frac{63}{2 \times 96500} \times 1.5 \times (10 \times 60)$

$\approx 0.293$ g.

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