Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion…
Thermodynamics · Class 11 · JEE Main Previous Year 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:
- a
A true, R false
- b
Both true, R not correct explanation
- c✓
Both true, R is correct explanation
- d
A false, R true
Both true, R is correct explanation
🧠 Standard enthalpy of neutralization of strong acid with strong base = kJ/mol because the net reaction is always Both strong acid and strong base are fully dissociated in solution. No ionisation energy is needed. The only process is:
Assertion A is true — it's always kJ/mol for strong acid + strong base. Reason R is also true and correctly explains why: 1 mol of from the acid combines with 1 mol of from the base. R is the correct explanation.
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