Bleaching powder is (i) treated with excess dilute H2SO4 and (ii) heated with a small amount of a cobalt salt. The gases evolved in (i) and (ii) are respectively

JEE Main levelSingle correct optionDifficulty 2 of 3ph025

Bleaching powder is (i) treated with excess dilute $H X_{2} SO X_{4}$ and (ii) heated with a small amount of a cobalt salt. The gases evolved in (i) and (ii) are respectively

(i)

CaOCl X_{2} + H X_{2} SO X_{4} CaSO X_{4} + Cl X_{2} + H X_{2} O

. (ii) With cobalt salts as catalyst,

2 CaOCl X_{2} 2 CaCl X_{2} + O X_{2}

. So the gases are

Cl X_{2}

and

O X_{2}