Question

Assertion: HCl is stronger acid than acetic acid.

Reason: On dissociation, HCl yields higher hydrogen ions concentration as compare to acetic acid.​

Answer 1

Explanation:

HCl is strong acid and is completely dissociated. Acetic acid is weak acid and partially dissociated. Thus, hydrogen ion concentration is higher in HCl than in acetic acid. ... In equimolar solution, the number of titrable protons present in HCl is equal to that present in acetic acid.

Answer 2

Complete Question-

Assertion: HCl is a stronger acid than acetic acid.

Reason: On dissociation, HCl yields higher hydrogen ions for the same concentration as compared to acetic acid.

(A.)Both A and R are true and R is the correct explanation of the assertion.

(B.)Both A and R are true but R is not the correct explanation of the assertion.

(C.)A is true but R is false.

(D.)A is false but R is true.

Answer-

The correct option is (A)Both A and R are true and R is the correct explanation of the assertion.

• Hydrochloric acid is stronger acid because in its aqueous solution the HCl completely disassociates to form hydronium ions and chloride ions.
• The reaction is represented as -

HCl + H₂O ---------->>H₃O⁺ + Cl⁻

• In equilibrium, the solution contains very few undissociated molecules of HCl.
• The PH of HCl is 3
• On the other hand, An aqueous solution of acetic disassociates partially or incompletely to give hydrogen and acetate ion.
• The p.H of acetic acid is 5.
• The reaction is represented as -

CH₃COOH + H₂0 -------> H⁺ + CH₃COO⁻

Hence, the strength of an acid depends on the concentration of hydrogen ions present in a solution.

So, Both Assertion and Reason are true. The reason is the correct explanation of the Assertion.

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