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Which of the following is a result of bubbling hydrogen chloride gas through gas?(a) H^– + Cl^–(b) H^+ + Cl^2-(c) H3O^+ + Cl^–(d) H^+ + Cl^–I got this question in class test.The origin of the question is P-Block Elements in portion P-Block Elements of Chemistry – Class 12

Answer»

Right choice is (c) H3O^+ + Cl^–

To elaborate: The hydrogen chloride molecule, HCl DISSOCIATES in water GIVING rise to one hydrogen ion and a chloride ion. The extremely small hydrogen ion BEARING the positive charge is instantly ATTRACTED by the unshared pair of electrons of the oxygen atom in water molecules, consequently giving rise to the hydronium ion, H3O^+.



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