Question

Comment on the reaction of dihydrogen with: 

(i) Chlorine (ii) Sodium

Answer 1

(i) Dihydrogen reacts with chlorine give hydrogen chloride. Dihydrogen reduces chlorine into CI⁻ ion and itself gets oxidized to H⁺ ion by chlorine to form hydrogen chloride.

H₂ (g) + Cl₂(g) → 2NCI(g)

(ii) Dihydrogen reacts with sodium to give sodium hydride. Dihydrogen is reduced by sodium to form NaH.

H₂ (g) + 2Na(g) → 2NaH(s)