Differentiate between the following pairs based on the criteria given in the brackets:

(a) Cane sugar and hydrated copper sulphate [using concentrated H₂SO₄]

(b) Sulphuric acid and hydrochloric acid [type of salts formed]

(a) Conc. H₂SO₄ dehydrates sucrose to a black spongy charged mass of carbon sugar charcoal.

$\text{C}${12}\text{H}{22}\text{O}{11}\xrightarrow{\text{Conc. H}2\text{SO}4} \underset{\text{sugar charcoal}}{12\text{C}} + \text{11H}2\text{O}

The blue coloured hydrous copper sulphate changes to white anhydrous copper sulphate as the water of crystallization is removed.

$\text{CuSO}$4\text{.5H}2\text{O} \xrightarrow{\text{Conc. H}2\text{SO}4} \underset{\text{[White Anhydrous]}}{\text{CuSO}4} + 5\text{H}2\text{O}

(b) Sulphuric acid forms sulphate salts whereas hydrochloric acid forms chloride salts.