7(i)
Which property of concentrated H2SO4 is used in each of the following cases?
(a) For the production of HCl gas when it reacts with a metal chloride.
(b) For the conversion of blue copper sulphate crystals to white anhydrous copper sulphate.
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(a) Non-volatile nature — being a non-volatile (less volatile) acid, it displaces the more volatile hydrogen chloride from a metal chloride.
(b) Dehydrating property — it removes the water of crystallisation from blue copper sulphate crystals, leaving behind white anhydrous copper sulphate.