A white colored chemical compound becomes hard on mixing
proper quantity of water. It is also used to maintain joints in fixed
position.
(a) Name the chemical compound and write its chemical formula.
(b) Write the chemical equation to show what happens when water
is added to this compound in proper quantity.
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Answer:
1) the chemical compound is (pop) plaster of paris its chemical formula is CaSo4. ½H²O
2) CaSo4. ½H²O(pop) + 1½H²O(water) ----> CaSO4. 2H²O(gypsum)
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