A compound x on heating loses partial crystallisation of water gives y which is used for making toys and other pottery articles. But when x is strongly heated (>130°c) it gives z which is used as drying agent .identify x,y,z and write the chemical quation
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your ans is given that compound x is gypsum and compound y is plaster of Paris and z is gypsum
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X- CaSO₄. 2H₂0 (GYPSUM)
Y- CaSO₄. 1/2 H₂0 (POP)
Z- CaSO₄
EQN- CaSO₄. 2H₂0 → CaSO₄. 1/2 H₂0 + 1 1/2 H₂O
X Y
EQN- CaSO₄. 2H₂0 → CaSO₄
Z
A commonly used compound for making chalks and other pottery articles is plaster of Paris. Its chemical formula is CaSO4.1/2H2O. It is obtained by CaSO4.2H2O on partial losing water of crystallization by controlled heating at 120-130°C. When CaSO4.2H2O is strongly heated, it loses whole of water of crystallization and gives anhydrous calcium sulphate. Thus 'x' is CaSO4.2H2O; y is CaSO4H2O and 'z' is CaSO4.
Explanation:
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