Question

For the reaction 2A(g) + B(s) ? C(g) + D(g) at 700

For the reaction
2A(g) + B(s) ? C(g) + D(g)
at 700

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Answer #1

2A (g) + B(s) C(g) + D(g)

Kc = [C][D] / [B][A]2

[B] = 1 because it is solid

[C] = [D] (both are are present in equimolar ratio)

                   [A ]                               [B] [C]         [D]

Initial            2x 1.29                            1.29                         0                                0

Change       -x                                 -x                               x                               x

Equilibrium 2.58-x                           1.29-x                        x                               x

Kc = x2 / [2.58-x][1.29-x]

0.0129 =x2 / [2.58-x][1.29-x]

solving this quadratic equation for x will give the amount of C present in the equilibrium

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