Question

A white crystalline salt X which is a constituent of cement when heated to 373K, a

substance Y is formed which is used in plastering of fractured bone.

i) Identify X and Y

ii) Write the chemical equation for the decomposition of X

iii) What happens when X is heated above 373K​

Answer 1

Answer:

here ur answer

Explanation:

x= gypsum

y= plaster of Paris

2) CaSO4.2H2O--------> CaSO4.1/2H2O+3/2H2O

3) then all the water of crystallisation of gypsum is eliminated and it turns into a dead burnt plaster.