Which of the following is(are) true when HCl (g) is passed through water?
(i) It does not ionise in the solution as it is a covalent compound.
(ii) It ionises in the solution
(iii) It gives both hydrogen and hydroxyl ion in the solution
(iv) It forms hydronium ion in the solution due to the combination of hydrogen ion with water molecule
(i) only
(iii) only
(ii) and (iv)
(iii) and (iv)
Steps: Although HCl is covalent in gaseous form, in water it ionises: HCl + H₂O → H₃O⁺ + Cl⁻. So (ii) and (iv) are correct.