Question

washing soda loses its weight when expose atmosphere give reason​

Answer 1

Answer:

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Reason:

Washing soda is an efflorescent salt. This salt when exposed to air loses water of crystallisation and crumbles down to form powder. Thus it loses weight when exposed to atmosphere.

When sodium carbonate crystals are exposed to air They lose water of crystallization and turn to white powder. This process of loosing water of crystallization when exposed to air is called efflorescence.

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Answer 2

Explanation:

Washing soda undergoes to efflorescence .

In this process , it loses water of crstallyzation when reacting with air , to form Soda ash. Hence , by loosing water molecules , it loses some of it weight.