Given the three statements below, which answer is correct?
I. An exothermic reaction releases heat to the surroundings.
II. The sign of D H for an exothermic reaction is positive.
III. For an endothermic reaction to be carried out at constant temperature, heat must be supplied from the surroundings.

Question

Quizplus · Accepted Answer

- Statement I is true because exothermic reactions release heat to the surroundings, making the surroundings warmer.- Statement II is false because the sign of ΔH (enthalpy change) for an exothermic reaction is negative, indicating that heat is released.- Statement III is true because endothermic reactions absorb heat from the surroundings to maintain a constant temperature during the reaction.

Given the Three Statements Below, Which Answer Is Correct