OnlineCBT
Chemistry · THERMODYNAMICS
हिन्दीGiven below are two statements: Statement I: In an exothermic reaction, the system loses heat to the surroundings, and therefore \( \Delta_r H \) is positive. Statement II: In an endothermic reaction, heat is absorbed from the surroundings, and therefore \( \Delta_r H \) is negative. In the light of the above statements, choose the most appropriate answer from the options given below:
Correct answer · Option 2
Both Statement I and Statement II are incorrect.
Explanation
For exothermic reactions, \( q_p < 0 \) so \( \Delta_r H \) is negative. For endothermic reactions, \( q_p > 0 \) so \( \Delta_r H \) is positive. Thus, both statements are incorrect.
