Question

Which of the following gives the correct increasing order of acidic
strength?
(a) Water (b) Water (c) Acetic acid (d) Hydrochloric acid
NCERT Class X
Science - Exemplar Problems

Chapter_Acids, Bases and Salts

Answer 1

1.water,2.acetic acid,3.hydrochloric acid

Answer 2

The correct increasing order of acidic strength is Water < Acetic acid < Hydrochloric acid.

Explanation:

• Acidic strength is the ability of acid to loss its H+ ions. Water is neutral and consists of H+ and OH- ions. Since acetic acid dissociates partially in the water, it gives less H+ ions.
• Thus, acetic acid is 'weak acid' with low acid strength. HCl is a strong acid with high acidic strength. It completely dissociates in water to give more H+ ions.

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