Which of the given compounds undergoes electrolytic decomposition reaction?

$C u C O_{3} (s)$

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None of the above

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$A g C l (s)$

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2 H_{2} O (l)

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Solution

The correct option is D $2 H_{2} O (l)$

$C u C O_{3} (s)$ undergoes thermal decomposition. These are reactions in which a single substance breaks into two or more simple substances when heated.

Example: $C u C O_{3} (g) H e a t - -- \to C O_{2} (g) + C u O (s)$

$2 A g C l (s)$ undergo photolytic decomposition. These are reactions in which a single reactant is decomposed into more than one products in the presence of light.

Example: $2 A g C l (s) S u n l i g h t - ---- \to 2 A g (s) + C l_{2}$

$H_{2} O (l)$ undergoes electrolytic decomposition. These are reactions in which a single reactant is decomposed into more than one products by the passage of electricity.

Example: $H_{2} O (l) E l e c t r i c i t y - ----- \to H_{2} (g) + O_{2} (g)$

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