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  4. Cl2 water if left undisturbed for sometime loses its colour and forms:

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Q. Cl2 water if left undisturbed for sometime loses its colour and forms:

NTA AbhyasNTA Abhyas 2020

Solution:

$Cl_{2}\left(\right.g\left.\right)$ decomposes $H_{2}O$ in presence of sunlight as
$Cl_{2}\left(g\right)+H_{2}O \rightarrow HCl+HOCl$