Write the product of the reaction
2Na+H2→⋯⋯
The product of the reaction is 2NaH (Sodium hydride).
2Na(s)Sodium+H2(g)Hydrogen→2NaHSodiumhydride
H2+S→⋯⋯
CO+2H2→⋯⋯
N2+3H2→⋯⋯