AP Chemistry· difficulty 3/5
K decreases as T increases for some reaction.
What is the sign of dH for this reaction?
Cannot determine
dH > 0 (endothermic)
dH = 0
dH < 0 (exothermic)
Explanation
For exothermic reactions, raising T shifts equilibrium toward reactants, decreasing K. The plot is consistent with dH < 0.
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