Chemistry · THERMODYNAMICS
हिन्दीGiven below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).\n Assertion (A): In a bomb calorimeter, the heat evolved corresponds directly to the enthalpy change (\( \Delta H \)) of the reaction.\n Reason (R): Reactions in a bomb calorimeter are carried out at a constant atmospheric pressure. \nIn the light of the above statements, choose the correct answer from the options given below:
Correct answer · Option 4
(A) is false but (R) is true.
Explanation
Both (A) and (R) are false. In a bomb calorimeter, the reaction occurs at constant volume, so the heat evolved equals the internal energy change \( q_v = \Delta U \), not enthalpy change \( \Delta H \).