The concentrations in an expression of the equilibrium constant are given in
Correct answer: D. mol/L
- A. mol/mL
- B. g/L
- C. gram-equivalents/L
- D. mol/L
Explanation
The concentrations in an expression of the equilibrium constant are given in moles per liter (mol/L) because it reflects the molar concentration of species in solution, which is standard for expressing chemical equilibria. The other options such as mol/mL, g/L, and gram-equivalents/L are incorrect as they do not represent molar concentrations. Mol/mL is not typically used due to its impracticality in large-scale chemistry calculations. G/L is a mass concentration and not suitable for equilibrium constants. Gram-equivalents/L is used in titration contexts rather than equilibrium calculations.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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