Question

The equation Na + H₂O → NaOH + H₂ is

(a) correct
(b) incorrect since it is not balanced
(c) incorrect since sodium does not react with water.
(d) incorrect since hydrogen should be written as H and not H₂.

Answer 1

​(b) incorrect since it is not balanced

A chemical equation needs to be balanced. The balanced equation for the above reaction is,
$2\mathrm{Na}+2{\mathrm{H}}_2\mathrm{O}\to 2\mathrm{NaOH}+{\mathrm{H}}_2$