Which of the following are present in a dilute aqueous solution of hydrochloric acid?
(A) H 3 O + + Cl –
(B) H 3 O + + OH –
(C) Cl – + OH –
(D) unionised HCl
- Since HCl is an electrolyte , it dissociates into ions when added to water.
- Therefore, in dilute aqueous solution, HCl exists as H 3 O + and Cl - .
The ionisation of HCl in water is given below:
So, the correct option is (a) H 3 O + + Cl –