Question

Part A

Cyclohexane, C₆H₁₂, undergoes a molecular rearrangement in the presence of AlCl₃ to form methylcyclopentane, CH₃C₅H_9, according to the equation:

C₆H₁₂ ↔ CH₃C₅H₉

If K _c = 0.143 at 25°C for this reaction, find the equilibrium concentrations of C₆H₁₂ and CH₃C₅H₉ if the initial concentrations are 0.200 M and 0.150 M, respectively.

Part B

Consider the following reaction:

CuS(s) + O₂(g) ↔ Cu(s) + SO₂(g)

A reaction mixture initially contains 2.9 M O₂. Determine the equilibrium concentration of O₂ if K_c for the reaction at this temperature is 1.5.

Part C

At a certain temperature the equilibrium constant, K _c, equals 0.11 for the reaction:

2 ICl(g) ↔ I₂(g) + Cl₂(g).

What is the equilibrium concentration of ICl if 0.25 mol of I₂ and 0.25 mol of Cl₂ are initially mixed in a 2.0-L flask?

Answer 1

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