Question

A metal salt MX when exposed to sun light produces metal M and a gas X2.metal M is used in making ornaments when as gas X2 is used in making bleaching powder. The salt MX is itself used in and white photographs. 3 1.identify metal M and gas X2 2 write and name the type of chemical reactions involved when salt MX is exposed to light

Answer 1

Answer:

M=Silver (Ag)

X=Chlorine (Cl)

Reaction: AgCl2+Sunlight---------》Ag+ Cl2

Type of reaction: Photolytic decomposition.

Explanation:

Answer 2

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.

1. What do you think metal M is ?

2. What could be gas X2 ?

3. Name the metal salt MX.

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

Answer:

1.The metal M is Silver (Ag)

2.The gas X₂ is Chlorine (Cl)

3.The Metal Salt is - Silver Chloride (AgCl)

4.When this salt is exposed to light decomposition reaction takes place.

It's also called as photolytic decomposition

It decomposes into Silver and Chloride

The decomposition reaction can be written as

2AgCl → 2Ag + Cl₂