The species present in solution when CO 2 is dissolved in water are

Question

The species present in solution when CO 2 is dissolved in water are (A) CO 2, H 2 CO 3, HCO 3-, CO 32- (B) H 2 CO 3, CO 32- (C) CO 32-, HCO 3- (D) CO 2, H 2 CO 3

Tardigrade Admin · Accepted Answer

Carbon dioxide dissolves in water to form carbonic acid.

C O_{2} + H_{2} O ⇌ H_{2} C O_{3}

Carbonic acid is a weak acid. It dissociates to form carbonate and bicarbonate ions.

H_{2} C O_{3} + H_{2} O ⇌ H C O_{3}^{-} + H_{3} O^{+}

Bicarbonate ion dissociates to form carbonate ion.

H C O_{3}^{-} + H_{2} O ⇌ C O_{3}^{2 -} + H_{3} O^{+}

Hence, the species present in the solution are

C O_{2}, H_{2} C O_{3}, H C O_{3}^{-}, C O_{3}^{2 -}

.

Q. The species present in solution when $C O_{2}$ is dissolved in water are

$C O_{2}, H_{2} C O_{3}, H C O_{3}^{-}, C O_{3}^{2 -}$

$H_{2} C O_{3}, C O_{3}^{2 -}$

$C O_{3}^{2 -}, H C O_{3}^{-}$

$C O_{2}, H_{2} C O_{3}$

Q. The species present in solution when CO2​ is dissolved in water are

CO2​,H2​CO3​,HCO3−​,CO32−​

H2​CO3​,CO32−​

CO32−​,HCO3−​

CO2​,H2​CO3​

Q. The species present in solution when $C O_{2}$ is dissolved in water are

$C O_{2}, H_{2} C O_{3}, H C O_{3}^{-}, C O_{3}^{2 -}$

$H_{2} C O_{3}, C O_{3}^{2 -}$

$C O_{3}^{2 -}, H C O_{3}^{-}$

$C O_{2}, H_{2} C O_{3}$