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\text { 14. (3 marks) A reaction with } \Delta_{r} H^{\circ}=-25.0 \mathrm{~kJ} \text { mot }^{-1} \text {is conducted at } 25^{\circ} \mathrm{C} \text { , then again at }

75^{\circ} \mathrm{C} \text { . } If the equilibrium constant at 25°C is K1 and at 75°C is K2, calculate the K2/K1 ratio.

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