Question

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​

Answer 1

Explanation:

(a) Water < Acetic acid < Hydrochloric acid

Answer 2

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Option a)

The increasing order of acid strength is water < acetic acid hydrochloric acid. Hydrochloric acid is a mineral acid and ionises completely in water. A solution hydrochloric acid will have a much higher concentration of H' ions and hence lower the pH level. That's why it is a strong acid.