Question

A metal salt MX when exposed to light splits up to form metal M and a gas X₂ . Metal M is used in making ornaments whereas gas X₂ is used in making bleaching powder. The salt MX is itself used in black and white photography.

(a) What do you think metal M is ? 

(b) What could be gas X₂ ? 

(c) Name the metal salt MX. 

(d) Name any two salt solutions which on mixing together can produce a precipitate of salt MX. 

(e) What type of chemical reaction takes place when salt MX is exposed to light ? Write the equation of the reaction.

Answer 1

(a) Silver. 

(b) Chlorine. 

(c) Silver chloride. 

(d) Silver nitrate and Sodium chloride. 

(e) Decomposition reaction;