Question

A student has three samples of copper sulphate crystals in separate test tube X, Y and Z. The colour of copper sulphate in X is blue, in Y is white and Z is blue. Which test tube requires heating to remove water of crystallization.

Answer 1

Answer:

The colour of hydrated copper sulphate CuSO

The colour of hydrated copper sulphate CuSO 4

The colour of hydrated copper sulphate CuSO 4

The colour of hydrated copper sulphate CuSO 4 .5H

The colour of hydrated copper sulphate CuSO 4 .5H 2

The colour of hydrated copper sulphate CuSO 4 .5H 2

The colour of hydrated copper sulphate CuSO 4 .5H 2 O is blue that turns into while, when heated at high temperature in a test tube, due to loss of water molecules from copper sulphate.

The colour of hydrated copper sulphate CuSO 4 .5H 2 O is blue that turns into while, when heated at high temperature in a test tube, due to loss of water molecules from copper sulphate.The liquid droplets appearing on the cupper side of test tube are the water molecules that evaparak on heating and condense on touching the cooler surface of upper part of the test tube.

Explanation:

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Answer 2

The X and Z test tube requires heating to remove water of crystallization.

• Crystal hydrated copper sulphate having formula $CuSO_4.5H_2O$ is blue in color and releases water of crystallization on heating. As the colour of copper sulphate in test tube X and Z is blue so, they will release water on heating.
• Anhydrous copper sulphate has white colour.