Which is the equilibrium constant expression for 2SO2(g) + O2(g) <=> 2SO3(g)?
Answer and explanation
Correct answer: A. K = [SO3]^2 / ([SO2]^2 [O2])
- Step 1: K is products over reactants, each raised to the power of its coefficient.
- Step 2: Products: [SO3]^2. Reactants: [SO2]^2 [O2].
Answer
K = [SO3]^2 / ([SO2]^2 [O2]).
Why not the others: The first is inverted; the second ignores the coefficients; the third multiplies by and adds the coefficients.
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