How is the equilibrium constant (K) calculated?Question 4Select one:a.[products][reactants][products][reactants]b.[reactants][products][reactants][products]c.[reactants] + [products]d.[products] x [reactants]
Question
How is the equilibrium constant (K) calculated?Question 4Select one:a.[products][reactants][products][reactants]b.[reactants][products][reactants][products]c.[reactants] + [products]d.[products] x [reactants]
Solution
The equilibrium constant (K) is calculated using the concentrations of the products and reactants at equilibrium. The correct answer is a. [products]/[reactants].
Here are the steps to calculate it:
- Write down the balanced chemical equation.
- Write the expression for the equilibrium constant. For a general reaction, aA + bB ⇌ cC + dD, the equilibrium constant expression is K = ([C]^c [D]^d) / ([A]^a [B]^b), where the letters in brackets represent the molar concentrations of the substances and the superscripts represent their stoichiometric coefficients.
- Substitute the equilibrium concentrations into the equilibrium constant expression and calculate K.
Remember that pure solids and liquids do not appear in the equilibrium constant expression.
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