Question

Which of the following is(are) true when HCl (g) is passed through water? 

(i) It does not ionize 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 

(a) (i) only 

(b) (iii) only 

(c) (ii) and (iv)

(d) (iii) and (iv)

Answer 1

The answer is (c) (ii) and (iv)

• HCl is a strong acid which ionizes completely in water to produce Hydrogen as well as Hydrogen and chlorine. 
• Hydrogen produces combine with water molecules to give Hydronium ions.