Phosphorus pentachloride decomposes to phosphorus trichloride and chlorine gas at elevated temperatures by the following reaction: PCl5(g) ⇌ PCl3(g) + Cl2(g). If Kc = 2.1 at 280°C, what is the value of Kp at the same temperature? Enter your answer as the nearest whole number. *The answer is 95, but would like an explanation*

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