AP Chemistryhardmcq1 pt
A reaction's K increases as temperature rises. What is the sign of ΔH°?
A.Positive (endothermic)
B.Negative (exothermic)
C.Zero
D.Cannot be determined
Explanation
Core Concept
Endothermic reactions absorb heat, so heating pushes the equilibrium toward products and raises K. The van 't Hoff relation ties this to ΔH° > 0.
Correct Answer
APositive (endothermic)
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