Question

A compound of silver 'x' which was light yellow in colour when exposed to sunlight changes to grey colour. a)identify the compound 'x'? b)name the type of reaction?

Answer 1

Light reaction... I think its silver bromine or silver chloride

Answer 2

Answer : (a) The compound 'x' is, silver bromide (AgBr)

(b) The name of the reaction is, photolytic decomposition reaction.

Explanation :

As we know that the silver bromide is a soft, pale-yellow and water-insoluble salt. It is sensitivity towards the sunlight.

When silver bromide is exposed to sunlight, it decomposes to silver metal which is grey in color and bromine gas as a product.

The balanced decomposition reaction will be,

$2AgBr(s)\overset{sunlight}\rightarrow 2Ag(s)+Br_2(g)$

Decomposition reaction : It is a type of reaction in which a larger molecule decomposes into two or more smaller molecule.