Q. 163.8( 5 Votes )

Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to:

(i) The formation of silver by decomposition of silver chloride

(ii) Sublimation of silver chloride

(iii) Decomposition of chlorine gas from silver chloride

(iv) Oxidation of silver chloride
A. (i) only

B. (i) and (iii)

C. (ii) and (iii)

D. (iv) only

Answer :

White silver chloride turns grey in sunlight due to the decomposition of silver chloride into silver and chlorine by light.

The reaction that takes place is:

2AgCl + sunlight 2Ag + Cl2

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