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

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 $-57 \mathrm{~kJ} \mathrm{~mol}^{-1}$.\ 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.\

Professor PC Thomas Classes · Answer

(a) : Enthalpy of neutralisation of strong acid and strong base is always -57 $\mathrm{kJ} / \mathrm{mol}$ because strong monobasic acid gives one mole of $\mathrm{H}^{+}$ions and strong monoacidic base gives one mole of $\mathrm{OH}^{-}$ ions which form one mole of water.\