Question

what change in colour is observed when white silver chloride is left exposed to sunlight state the type of chemical reaction in this change

Answer 1

When silver chloride is left exposed in sunlight, the following reaction takes place-

2AgCl-sunlight-2Ag+Cl2

This type of reaction is called as decomposition reaction.

The silver chloride powder changes into greyish silver colour as chlorine gas gets removed from it and only silver remains.

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Answer 2

a) The color changes from white to grey.

b) The type of chemical reaction in this change is decomposition

Explanation:

The Decomposition of silver chloride is given by the reaction:

$2AgCl\rightarrow 2Ag+Cl_2$

The white silver chloride powder changes into grey silver on photo decomposition.

Decomposition reaction is a type of chemical reaction in which one reactant gives two or more than two products.

$A\rightarrow B+C$

The reaction is called as photo decomposition as the reactant decomposes using sunlight as the source of energy.

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