Question

Name the product formed when sodium react with water.

• A. NaOH
• B. NaH
• C. $N{a}_{2}O$
• D. No reaction take place

Answer 1

The correct option is A NaOH

Alkali metals react with water to form
hydroxide and dihydrogen
$2Na\left(s\right)+2H_{2}O\left(l\right)\to NaOH\left(aq\right)+H_2\left(g\right)$

Theory
Reactivity towards water:
Alkali metals react with water to form hydroxide and dihydrogen

$2M\left(s\right)+2H_{2}O\left(l\right)⟶2MOH\left(aq\right)+H_2\left(g\right)$
M = alkali metal
Note:-
Lithium has the most negative $E^o$ value
But its reaction with water is less vigorous than that of sodium which has the least
negative $E^o$ value among the alkali metals

Other metals of the group react explosively with water.They also react with proton donors such as alcohols, gaseous ammonia and alkynes.