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A solution of sodium sulphate in qater is electrolysed using inert electrodes, The products at the cathode and anode are respectively.A. `H_(2),O_(2)`B. `O_(2),H_(2)`C. `O_(2),Na`D. `O_(2),SO_(3)` |
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Answer» Correct Answer - A In aqueous solution: reducton potential of `H_(2)Ogt` reduction potential `Na^(o+)` . Hence, `H_(2)O` undergoes reaction at cathode to give `H_(2(g))` `H_(2)O+e^(-)rarr(1)/(2)H_(2(g))+overset(Θ)OH_((aq))` Similary, oxidation potential of `H_(2)Ogt` oxidation potential of `SO_(4)^(2-)` ions. Hence, oxidation of `H_(2)O` occurs at anode to give `O_(2(g))` `H_(2)Orarr 2H^(o+)+(1)/(2)O_(2(g))+2e^(-)` |
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