JEE Main 2024 Chemistry question

ChemistryThermodynamicsJEE Main 2024

Given below are two statements: One is labeled 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 kJ mol Reason (R): Enthalpy of neutralisation is the amount of heat liberated when one mole of H ions furnished by acid combine with one mole of 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.

Answer: (B)

Solution

For a strong acid and strong base the only process is H⁺ + OH⁻ → H₂O, so ΔH ≈ −57 kJ mol⁻¹ every time.

Question ID VK-011521