2 g of silver chloride is taken in a china dish and the china dish is placed in sunlight for some time. What will be your observation in this case? Write the chemical reaction involved in the form of a balanced chemical equation. Identify the type of chemical reaction.

OR

Identify the type of reactions taking place in each of the following cases and write the balanced chemical equation for the reactions.

(a) Zinc reacts with silver nitrate to produce zinc nitrate and silver metal

(b) Potassium iodide reacts with lead nitrate to produce potassium and lead iodide.

When 2 g of silver chloride is taken in a china dish and the china dish is placed in sunlight for some time, the white sodium chloride turns grey. This is due to the decomposition reaction through sunlight that decomposes silver chloride into silver and chloride by light.

The type of reaction taking place is photolytic decomposition or decomposition reaction.

OR

a)

Identification of product:

Balanced equation:

Type of reaction: Displacement reaction

The type of reaction taking place here is displacement reaction. In this type of a reaction, a more reactive element displaces a less reactive element from its compound. Zinc is more reactive than silver, so it displaces silver from the silver nitrate compound and forms zinc nitrate.

b) Identified products:

Balanced equation:

Type of reaction: Double displacement reaction

In this type of a reaction, the cation and anion of two different compounds switch places, or displace each other and form two entirely different compounds. So in the above reaction potassium replaces lead in lead nitrate and lead replaces the potassium in potassium iodide and forms two new products, namely lead iodide and potassium nitrate.