Question Detail

CHM 101 CHM 101 Past Questions Objective Question
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Question

What is the ΔH sign for an exothermic energy change?
Options
A Always negative
Correct Answer
B Always positive
C Could be positive or negative
D Depends on the potential energy of the reactants
Correct Answer

Option A is the correct answer.

Detailed Explanation

Exothermic reactions release heat from the system to the surroundings. The enthalpy of the products is less than that of the reactants, so ΔH is negative.

Hint

Exo means out. Heat exits the system.

Question Info

Course: CHM 101
Topic: CHM 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 993 of 1872
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