Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Enthalpy of neutralisation of strong monobasic acid with strong monoacidic bas

Question

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Enthalpy of neutralisation of strong monobasic acid with strong monoacidic base is always .

Reason (R): Enthalpy of neutralisation is the amount of heat liberated when one mole of  ions furnished by acid combine with one mole of  ions furnished by base to form one mole of water.

In the light of the above statements, choose the correct answer from the options given below:

(1) (A) is true but (R) is false
(2) Both (A) and (R) are true but (R) is not the correct explanation of (A)
(3) Both (A) and (R) are true and (R) is the correct explanation of (A)
(4) (A) is false but (R) is true

Canvas Classes · Accepted Answer

Strategy:
 For reactions involving strong acids and strong bases, the net ionic equation is the formation of water from hydrogen and hydroxide ions. This standard process releases a consistent amount of energy.

Step 1: Evaluate the Assertion (A)
Strong monobasic acids (like ) and strong monoacidic bases (like ) are completely ionized in dilute aqueous solutions. The neutralization reaction is fundamentally:

The enthalpy change for this specific ionic combination is approximately . Assertion (A

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