1.

The formula of soda ash is …..

Answer»

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

Solution : Washing soda loses WATER of crystallization above 373K. It BECOMES white anhydrous powder called soda ash.
`Na_(2)CO_(3)*10H_(2)O OVERSET(gt 373K)toNa_(2)CO_(3)*10H_(2)O`


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