NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

1 Easy

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Application +4 | -1

Give the products available on the cathode and the anode respectively during the electrolysis of an aqueous solution of

\mathrm{MgS}{\mathrm{O}_4}

between inert electrodes.

View answer and explanation

Correct option: A

{\mathrm{H}_2}\left( \mathrm{g} \right)\mathrm{and}{\kern 1pt} {\kern 1pt} {\mathrm{O}_2}

(g)

Option A is correct. During the electrolysis of aqueous

\mathrm{MgSO}_4

, water is reduced at the cathode to produce

{H_2(g)}

, and water is oxidized at the anode to produce

{O_2(g)}

because

{Mg^{2+}}

and

{SO_4^{2-}}

ions are relatively stable and harder to reduce/oxidize than water.

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