Multiple Choice
For the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g), if the equilibrium partial pressures are P(SO2) = 0.2 atm, P(O2) = 0.1 atm, and P(SO3) = 0.4 atm, what is the value of the equilibrium constant Kp?
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16. Chemical Equilibrium
Equilibrium Constant K
Multiple Choice
What is the equilibrium constant expression, Keq, for the reaction: A(g) ⇌ B(aq) + 2C(aq)?
A
Keq = [B][C] / [A]^2
B
Keq = [B][C]^2 / [A]
C
Keq = [A] / [B][C]^2
D
Keq = [A][B][C]^2
Verified step by step guidance1
Identify the balanced chemical equation: A(g) ⇌ B(aq) + 2C(aq).
Understand that the equilibrium constant expression, Keq, is derived from the concentrations of the products over the reactants, each raised to the power of their stoichiometric coefficients.
For the given reaction, the products are B and C, and the reactant is A. The stoichiometric coefficient for B is 1 and for C is 2.
Write the equilibrium constant expression: Keq = ([B]^1 * [C]^2) / [A]^1.
Simplify the expression to: Keq = [B][C]^2 / [A].
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