For A + B <=> C at equilibrium, [A] = 0.2, [B] = 0.5 and [C] = 0.4 mol/dm^3. Find Kc.
Answer and explanation
Correct answer: B. 4
- Step 1: Kc = [C] / ([A][B]) for this reaction.
- Step 2: Kc = 0.4 / (0.2 x 0.5) = 4.
Answer
4.
Why not the others: '0.25' inverts the equilibrium expression; '0.04' multiplies all three concentrations; '0.57' adds the reactant concentrations.
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