Question

(1)the equilibrium constant for the reaction A(g)⇌B(g) is 10^2. A reaction mixture initially contains [A]=15.7M and [B]=0.0M. Which statement is true to equilibrium? (a) the reaction mixture contains [A]=1.0M and [B]=14.7M (b) mixture contains [A]=0.2M [B]=15.5M (c) [A]=7.85M [B]=7.85M (D) [A]=15.5M [B]=0.2M

(2) Cyclohexane undergoes a molecular rearrangement in the presence of AlCl3 to form methylcyclopentane, according to the equeation C6H12<->CH3C5H9. If Kc=0.143 at 25 celsius for this reaction, find the equilibrium concentrations of C6H12 and CH3C5H9 if the initial concentrations are 0.200M and 0.150M respectively. (a)[C6H12] = 0.307 M, [CH3C5H9] = 0.043 M (b)[C6H12] = 0.093 M, [CH3C5H9] = 0.257 M (c) [C6H12] = 0.107 M, [CH3C5H9] = 0.107 M (d)[C6H12] = 0.218 M, [CH3C5H9] = 0.013 M

(3) At 900.0 K, the equilibrium constant (K p) for the following reaction is 0.345. 2SO2 + O2(g) → 2SO3(g) At equilibrium, the partial pressure of SO2 is 25.1 atm and that of O2 is 11.4 atm. The partial pressure of SO3 is ________ atm (a) 6.93 × 10-3 (b) 99 (c) 28.8 (d) 1.20 × 10-3 (e) 49.8

(4) How does [C] change when A is added to the following reaction at equilibrium? 3 A(g) + B(g) ↔ C(g) + 2 D(s) (a) Cannot be predicted. (b) [C] will decrease. (c) [C] will increase. (d) [C] will not change