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
Select the correct option:
A
(A) is true but (R) is false
B
Both (A) and (R) are true and (R) is the correct explanation of (A)
C
(A) is false but (R) is true
D
Both (A) and (R) are true but (R) is not the correct explanation of (A)
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Enthalpy of neutralization of SA \& SB is always $-57 \mathrm{~kJ} / \mathrm{mol}$ because strong monoacid gives one mole of $\mathrm{H}^{+}$and strong mono base gives one mole of $\mathrm{OH}^{-}$which form one mole of water.
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