Question

When caustic soda is heated strongly.

Answer 1

Answer:

when washing soda was strongly heated, it loses all water of crystallization and become anhydrous sodium carbonate. The following reaction took place:

Na

2

CO

3

.10H

2

O

−9H

2

O

Δ

Na

2

CO

3

.H

2

O

−H

2

O

Δ

Na

2

CO

3

Thus when washing soda is heated it loses water vapour.

Answer 2

Answer:

refer to the attachment