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  • 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

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

(a) (i) only                 (b) (iii) only

(c) (ii) and (iv)           (d) (iii) and (iv)

Answers (1)

Answer: (c)

When HCl is passed through water then HCl being a polar covalent compound, ionises in water as

HCl (aq)\rightarrow H^{+}+Cl^{-}

H^{+}+H_{2}O\rightarrow H_{3}O^{+}

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