Q. The hydrolysis of sodium carbonate involves the reaction between
A) Sodium ion and water
B) $Na^{+}and\ OH^{-}$
C) $CO_{3}^{2 -}\ and\ water$
D) $CO_{3}^{2 -}\ and\ H^{+}$
Explanation
(c)
$Na_{2}CO_{3} + 2H_{2}O \rightleftharpoons 2NaOH + H_{2}CO_{3}$
or $2Na^{+} + CO_{3}^{2 -} + 2H_{2}O \rightleftharpoons 2Na^{+} + 2OH^{-} + H_{2}CO_{3}$
or $CO_{3}^{2 -} + 2H_{2}O \rightleftharpoons 2OH^{-} + H_{2}CO_{3}$
It is anionic hydrolysis.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.