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A hydrated solid X on heating initally g...

A hydrated solid X on heating initally gives a monohydrated compound Y. Y upon heating above 373 K leads to an anhydrous white powder Z, X and Z respectively, are:

A

Baking soda and soda ash

B

Washing soda and soda ash

C

Baking soda and dead burnt plaster

D

Washing soda and dead burnt plaster

Text Solution

Verified by Experts

The correct Answer is:
B
`underset("(washing soda)")(Na_2 CO_3. 10 H_2 O) underset(- 9 H_2 O)overset(373 K)to Na_2 CO_3 . H_2 O overset(gt 373 K)to underset("soda ash")(Na_2 CO_3) + H_2 O`
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