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The chemical formula of soda ash is...

The chemical formula of soda ash is

A

`Na_(2)CO_(3).10H_(2)O`

B

`Na_(2)CO_(3).2H_(2)O`

C

`Na_(2)CO_(3).H_(2)O`

D

`Na_(2)CO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
On heating washing soda, it loses it water of crystallisation. Above 373 K, it becomes completely anhydrous white powder called soda ash.
`underset("Washing soda")(Na_(2)CO_(3)10H_(2)O) overset(gt 373K)rarr underset("Soda ash")(Na_(2)CO_(3))10H_(2)O`
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