Question

Soda water is prepared by dissolving sodium carbonate in water.

• A. True
• B. False

Answer 1

The correct option is B False

When $C{O}_2$ dissolves in $H_{2}O$ to form $H_{2}C{O}_3$ . Most of its dissolved, $C{O}_2$ remains loosely hydrated. $H_{2}C{O}_3$ is a weak dibasic acid. It forms a series of two salts. $C{O}_2$ is an hydride of carbonic acid.

$C{O}_2\left(ag\right)+H_{2}O\left(I\right)\rightleftharpoons H_{2}C{O}_3\left(ag\right)$

$H_{2}C{O}_3\left(ag\right)\rightleftharpoons H+\left(ag\right)+C{O}_3\left(ag\right)$

$HC{O}_3^{-}\left(ag\right)\rightleftharpoons H^{+}\left(ag\right)+C{O}_3\left(ag\right)$

This equilibrium is a upper system to maintain ${}_{p}H$ of human blood between $7.26-7.42$.

Water solution of $H_{2}C{O}_3$ is soda water.