Which of the following gives the correct increasing order of acidic strength
(a) Water < Acetic acid < Hydrochloric acid
(b) Water < Hydrochloric acid< Acetic acid
(c) Acetic acid< Water < Hydrochloric acid
(d) Hydrochloric acid < Water < Acetic acid

AcademicChemistryNCERTClass 10

Correct Answer: (a) Water < Acetic acid < Hydrochloric acid

Explanation: HCl has the highest acidic strength as it is a strong acid and completely or 100% ionizes into its ions which is shown by its dissociation constant.

Acetic acid partially dissociates into its ions and at the equilibrium stage, both the ions, acetate, and hydrogen ions are present so it has less acidic strength than HCl.

Water is the weakest of all and its ions hydrogen and hydroxide ions keep on forming water molecules at the equilibrium stage.

Updated on 10-Oct-2022 13:27:12