Answer 1

When Na metal is dropped in water, it reacts violently to form sodium hydroxide and hydrogen gas. The chemical equation involved in the reaction is:

`2Na_(s) + 2H_2O_(l) ->  2NaOH_((aq)) + H_(2(g))`

Answer 2

2Na + 2H₂O ——–> 2NaOH + H₂