NEET Chemistry Enthalpy Assertion Reason Question
Assertion (A): The enthalpy change for ionization is temperature-dependent.
Reason (R): The heat capacity change for ionization is positive, increasing with temperature.
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 true but R is false.
A is false.
Correct Answer
Detailed Explanation
The enthalpy change for ionization is temperature-dependent because the reaction's heat capacity change is positive, as indicated by the formula ΔrH₀(ionization) = E₀ + 5/2 RT.
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