Question

A metal salt MX when exposed to light splits to form metal M and gas X2. Metal M is used to make ornaments where as gas is used in making bleacng powder. The salt MX is used in black and wte photography. Identify the metal M and gas X2. Identify MX. Write down the chemical reaction when salt MX is exposed to sunlight

Answer 1

1. Metal M is Silver.

2. Gas X2 is Cl2(Chlorine gas)

3. AgCl or Silver Chloride.

4. Decomposition reaction of Silver Chloride i.e.

Here Salt MX is AgCl, On balancing reaction we get,

2AgCl-----(Sunlight)-----> 2Ag+Cl2

Hope it helps!