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Give reasons for the following :
(a) Dry $\ce{HCl}$ gas does not change the colour of a dry blue litmus paper.
(b) Copper sulphate crystals turn white on heating.
(a) Dry $\ce{HCl}$ gas does not change the colour of a dry blue litmus paper.
(b) Copper sulphate crystals turn white on heating.
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(a)Because $\ce{HCl}$ does not ionize in dry state/does not give $\ce{H+}$ ions in dry state. (1 Mark)
(b)Because of loss of 5 molecules of water of crystallization. (1 Mark)
(b)Because of loss of 5 molecules of water of crystallization. (1 Mark)