What is the equilibrium constant expression for the reaction: aA + bB ⇌ cC + dD?
Correct Answer: K = [C]^c [D]^d / [A]^a [B]^b
- Step 1: Identify the balanced chemical equation: aA + bB ⇌ cC + dD.
- Step 2: Recognize that 'A' and 'B' are reactants, and 'C' and 'D' are products.
- Step 3: Write the expression for the equilibrium constant K.
- Step 4: For the products (C and D), write their concentrations raised to the power of their coefficients: [C]^c and [D]^d.
- Step 5: For the reactants (A and B), write their concentrations raised to the power of their coefficients: [A]^a and [B]^b.
- Step 6: Combine the products and reactants into the equilibrium constant expression: K = ([C]^c * [D]^d) / ([A]^a * [B]^b).
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