Chemistry-(general)
NEET Chemistry (general) Assertion Reason Question
Type: Assertion Reason-assertion-Easy-Class 11
Assertion (A): The change in enthalpy for the reaction HCl.25 aq. + 15 aq. → HCl.40 aq. is -0.76 kJ/mol. | Reason (R): Hess's Law allows us to determine the enthalpy change of a reaction by using the enthalpy changes of multiple related reactions.
A
Both A and R are true, and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option A
Detailed Explanation
The enthalpy change of -0.76 kJ/mol is calculated by subtracting the enthalpy of one equation from another, which is a direct application of Hess's Law as described in the NCERT context.
Found an issue with this question?