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  • A colourless liquid ‘A’ contains H and O elements only. It decomposes slowly on exposure to light. It is stabilised by mixing urea to store in the presence of light.

A colourless liquid ‘A’ contains H and O elements only. It decomposes slowly on exposure to light. It is stabilised by mixing urea to store in the presence of light.
(i) Suggest possible structure of A.
(ii) Write chemical equations for its decomposition reaction in light.

Answers (1)

(i) A is Hydrogen Peroxide (H_{2}O_{2}) as it decomposes slowly on exposure to light and is stabilised by mixing urea to store in the presence of light.

 

Its possible structure is as follows: -

 

(ii) The chemical equations for its decomposition reaction in light are as follows-

2H_{2}O_{2} (l)\rightarrow 2H_{2}O (l) + O_{2 }(g)

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