Explain why pure liquids and solids can be ignored while writing … - Vidyadip

Question

Explain why pure liquids and solids can be ignored while writing the equilibrium constant expression?

✓

Answer

For the concentration of pure solid or pure liquid,
$\text{Molar conc.}=\frac{\text{Molar of the substance}}{\text{Volume of the substance}}$
Since density of pure solid or liquid is constant at constant temperature and molar mass is also constant therefore, their molar concentrations are constant and are included in the equilibrium constant.

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