JEE MAIN - Chemistry (2024 - 5th April Morning Shift - No. 6)
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 $$-57 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
Reason (R) : Enthalpy of neutralisation is the amount of heat liberated when one mole of $$\mathrm{H}^{+}$$ ions furnished by acid combine with one mole of $${ }^{-} \mathrm{OH}$$ 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.
(A) is true but (R) is false
Both (A) and (R) are true and (R) is the correct explanation of (A)
Both (A) and (R) are true but (R) is not the correct explanation of (A)
(A) is false but (R) is true
Explanation
Enthalpy of neutralisation of strong acids and bases is $$-57 \mathrm{~kJ} / \mathrm{mol}$$. which is fixed for reaction of 1 mole of $$\mathrm{H}^{+}$$ with 1 mole of $$\mathrm{OH}^{-}$$ to form 1 mole of water.
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