Question

Gaseous BrCl is placed in a closed container at 2054 oC, where it partially decomposes to Br2 and Cl2:

2 BrCl(g) revrxnarrow.gif 1 Br2(g) + 1 Cl2(g)

At equilibrium it is found that p(BrCl) = 0.004430 atm, p(Br2) = 0.008780 atm, and p(Cl2) = 0.002480 atm. What is the value of KP at this temperature?Gaseous Brel is placed in a closed container at 2054 °C, where it partially decomposes to Br2 and Cl2: 2 Brcl(g) = 1 Br2(g) +

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Answer #1

From the given data,

The equilibrium pressures are as,

PBrCl = 0.004430 atm

PBr2 = 0.008780 atm

PCl2 = 0.002480 atm

Hence , we know that,

Kp = (PBr2).(PCl2)/(PBrCl)^2

Kp =(0.008780)(0.002480)/(0.004430)^2

Kp = 1.109

Hence, equilibrium constant Kp = 1.11

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