Question Detail

CHM 101 Thermochemistry II Objective Question

Question

What is the sign convention for heat (q) in thermochemistry?
Options
A q > 0 when heat flows out of the system
B q > 0 when heat flows into the system (endothermic)
Correct Answer
C q is always positive
D q is always negative
Correct Answer

Option B is the correct answer.

Detailed Explanation

q > 0 means heat flows into the system (endothermic). q < 0 means heat flows out of the system (exothermic). Any energy entering the system has a positive sign.

Hint

The notes explain the sign convention.

Question Info