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EquilibriumMCQ

CO(g) + 2 H2(g) ⇄ CH3OH(g) DH < 0 The synthesis of CH3OH(g) from CO(g) and H2(g) is represented by tEquilibrium Chemistry Question

Question

CO(g) + 2 H2(g) ⇄ CH3OH(g) DH < 0

The synthesis of CH3OH(g) from CO(g) and H2(g) is represented by the equation above. The value of Kc for the reaction at 483 K is 14.5.

Which of the following explains the effect on the equilibrium constant, Kc , when the temperature of the reaction system is increased to 650 K?

A.

Kc will increase because the activation energy of the forward reaction increases more than that of the reverse reaction.

B.

Kc will increase because there are more reactant molecules than product molecules.

C.

Kc will decrease because the reaction is exothermic.

✓ Correct
D.

Kc is constant and will not change.

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