Question

In: Chemistry

Consider the reaction: 2NO(g)+Br2(g)⇌2NOBr(g) Kp=28.4 at 298 K In a reaction mixture at equilibrium, the partial...

Consider the reaction:
2NO(g)+Br2(g)⇌2NOBr(g) Kp=28.4 at 298 K
In a reaction mixture at equilibrium, the partial pressure of NO is 105 torr and that of Br2 is 132 torr .

What is the partial pressure of NOBr in this mixture?

Solutions

Expert Solution

Given reaction is   2NO(g) + Br2(g)    ⇌    2NOBr(g)      :Kp = 28.4

The partial pressure of NO = 105 torr

The partial pressure of Br2 = 132 torr

                                    2NO(g) + Br2(g)    ⇌    2NOBr(g)     

The equilibrium constant , Kp = p2NOBr(g) / [ p2NO(g) x p Br2(g) ]

From this      p2NOBr(g) = Kp x [ p2NO(g) x p Br2(g) ]

Plug the above values we get    p2NOBr(g) = 28.4 x [ 1052 x 132]

                                                                    = 41.3 x 106

                                                  p NOBr(g) =

                                                                   = 6429 torr

Therefore the partial pressure of NOBr in the mixture is 6429 torr


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