During electrolysis of carbonate ( ${C O_{3}}^{- 2}$ ), nitrate ( ${N O_{3}}^{- 1}$ ) and sulphate ( ${S O_{4}}^{- 2}$ ) based electrolyte, the gas that is formed at anode is ____________.

$S O_{2}$

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$C O_{2}$

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$N_{2}$

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$O_{2}$

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Solution

The correct option is D
$O_{2}$

The following ions cannot react with the elctrode material and will react with water of the solution to form respective acids and liberate oxygen gas.

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During electrolysis of copper sulphate, ___ gets formed at the anode.

(a) Give reason: The electrolysis of acidulated water is considered to be an example of catalysis.

(b) During the electrolysis of copper [II] sulphate solution using platinum as cathode and carbon as anode

(i) State what you observe at the cathode and at the anode

(ii) State the change noticed in the electrolyte

(iii) Write the reactions at the cathode and at the anode.

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