Which of the following changes to a reaction mixture that is already at equilibrium…

CHEMISTRY · Single correct · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)

Problem

Which of the following changes to a reaction mixture that is already at equilibrium will change the numerical value of the equilibrium constant, KK? (a) Adding a solid catalyst that speeds both forward and reverse reactions (b) Injecting additional reactant gas into the vessel (c) Lowering the temperature by 50 K50\,\text{K} (d) Compressing the mixture to half its original volume

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