Electrochemistry Question 7
Question 7 - 2024 (29 Jan Shift 1)
The mass of zinc produced by the electrolysis of zinc sulphate solution with a steady current of $0.015 A$ for 15 minutes is _________ $\times 10^{-4} g$.
(Atomic mass of zinc $=65.4 amu$)
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Answer (46)
Solution
$Zn^{+2}+2 e^{-} \longrightarrow Zn$
$W=Z \times i \times t$
$=\frac{65.4}{2 \times 96500} \times 0.015 \times 15 \times 60$
$=45.75 \times 10^{-4} gm$
