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when plaster of paric comes in contact w...

when plaster of paric comes in contact with water it sets into a hard mass. The composition of the hard mass is

A

`CaSO_(4)*H_(2)O`

B

`CaSO_(4)*Ca(OH)_(2)`

C

`CaSO_(4)*2H_(2)O`

D

`CaSO_(4)*2Ca(OH)_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`underset("Plaster of Paris")(2CaSO_(4)*(1)/(2)H_(2)O)+3H_(2)O to underset("Gypsum (Hard mass)")(2CaSO_(4)*2H_(2)O)`
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