AP Chemistryhardmcq1 pt
At constant pressure, a reaction absorbs 150 kJ of heat. What is its ΔH?
A.+150 kJ
B.+170 kJ
C.+130 kJ
D.−150 kJ
Explanation
Core Concept
At constant pressure, ΔH equals the heat exchanged (qₚ) by definition — so ΔH = +150 kJ. Work would shift ΔU, not ΔH.
Correct Answer
A+150 kJ
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