What happen when dihydrogen reacts with
(a) Chlorine ? Explain.

Explanation

a) Reaction of dihydrogen with chlorine : Hydrogen reacts with chlorine to form hydrogen chloride gas. This reaction occurs in presence of sun light.
`H_(2(g))+Cl_(2(g))overset(hv)to2HCl_((g))`
b) Reaction of dihydrogen with sodium metal : Hydrogen reacts with highly reactive metal like sodium and forms sodium hydride. The reaction occur at a high temperature.
`2Na_((s))+H_(2(g))to2NaH_((s))`