Q. A mixture of sodium oxide and calcium oxide are dissolved in water and saturated with excess carbon dioxide gas. The resulting solution is ….. .It contains
A) Basic; $NaOH\ and\ Ca(OH)_{2}$
B) Neutral; $Na_{2}CO_{3}\ and\ CaCO_{3}$
C) Basic; $Na_{2}CO_{3}\ and\ CaCO_{3}$
D) Acidic; $NaOH\ and\ CaCO_{3}$
Explanation
(c)
$Na_{2}O + CaO + H_{2}O + CO_{2} \rightarrow Na_{2}CO_{3} + CaCO_{3}$
Solution is basic. It can be proved as
$CO_{3}^{2 -} + 2H_{2}O \rightarrow H_{2}CO_{3} + 2OH^{-}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.