Question

For each of the mixtures listed here, indicate whether the mixture is at equilibrium at 450C. If it is not at equilibrium, indicate the direction (reactant, product, equilibrium) in which the mixture must shift to achieve equilibrium.

N2 (g) + 3 H2 (g) -><- 2NH3 (g)

Kp = 4.5 x 10e-5 at 450C

98 atm NH3, 45 atm N2, 55 atm H2
57 atm NH3, 143 atm N2, no atm H2
13 atm NH3, 27 atm N2, 82 atm H2

Answer 1

The specified reaction is N2 (8) 3 H ()2NH (g) The equilibrium constant with respect to the partial pressures, K, of the reaction is, Now, susbtitute the specified parti al pressures of N2, H2, and NH3, and calculate the value. Compare the value with the given value of Ky. If the calculated value is equal to K, value, then the mixture is at the equilibrium, else if the reaction mixture shifts towards left (reactant si de).The reacti on mixture shifts inorder to attain the equilibrium. For BH, = 98 atm,乃, = 45 atm, and 4-55 am. Br, X , (45 atm)x(55 atm (98 atm) 0.0705 As calculated value > K, (4.5 × 10-5), the reaction mixture will shift to the left.

For Pe, = 57 atm, B, = 143am,anda-Oatm (57 atm) -infinity (indeterminate) As calculated value >>> K, (4.5 x 10-5), the reacti on mixture will shift to the left. re Wi