A blue salt becomes white on heating. Explain the change in colour with the help of a chemical equation.
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Answered by
34
It is because they have the water of crystallization.. These water molecules are bonded in such a manner that whenever the temperature of the surrounding is increased or they are directly exposed to heat they lose thses water molecules..
Blue salt is CusO4.5H2O has 5 units of water of crystallization..
Blue salt is CusO4.5H2O has 5 units of water of crystallization..
Answered by
27
Hydrated copper sulphate crystals [cuso4. 5H2o] are blue in color
When copper sulphate crystals are heated strongly they loose all water of crystallization and form anhydrous copper sulphate [which is white in color]
Cuso4. 5H2o-------->cuso4+5H2o
Hydrated Anhydrous
Copper sulphate copper
Sulphate
The water of crystallization gives the crystals of their salts their shape and color
When copper sulphate crystals are heated strongly they loose all water of crystallization and form anhydrous copper sulphate [which is white in color]
Cuso4. 5H2o-------->cuso4+5H2o
Hydrated Anhydrous
Copper sulphate copper
Sulphate
The water of crystallization gives the crystals of their salts their shape and color
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