Question

$C{O}_2$ in water behaves as

• A. weak dibasic acid $H_{2}C{O}_3$
• B. weak monobasic acid $HOC{O}_{2}H$
• C. weak diacid base $CO(OH{)}_2$
• D. weak monoacid base $HO-C{O}_{2}H$

Answer 1

The correct option is A weak dibasic acid $H_{2}C{O}_3$

$C{O}_2+H_{2}O\leftrightharpoons H_{2}C{O}_3$
$H_{2}C{O}_3\leftrightharpoons H^{+}+HC{O}_3^{\ominus }$
$HC{O}_3^{\ominus }\leftrightharpoons H^{+}+C{O}_3^{2-}$