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← ScienceWhich consequence results from increasing temperature in reversible exothermic reaction at sealed vessel equilibrium?
A)Shift towards reactants raising pressure✓
B)Unchanged concentrations holding pressure
C)Shift towards products lowering pressure
D)Equilibrium constant, Kc, always increases
💡 Explanation
When temperature increases in a sealed exothermic system, the equilibrium shifts against the heat by favoring the endothermic, or reverse, reaction, because of Le Chatelier's principle, increasing reactant concentration and pressure. Therefore, formation of lower energy starting substances rather than a product state is promoted as heat rises.
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