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

Asked by Abhisek | 11 months ago |  85

##### Solution :-

This is because the molar concentration of a pure solid or liquid is independent of the amount present.

Mole concentration

$$\dfrac{Number\: of\: moles}{Volume}\\ \\$$

$$\dfrac{Mass\;molecular \: mass}{Volume}\\ \\$$

$$=\dfrac{Mass}{Volume\,\times\, Molecular \:mass}\\ \\$$

$$=\dfrac{Density}{Molecular\: mass}$$

Though the density of the solid and pure liquid is fixed and molar mass is also fixed.

Molar concentration are constant.

Answered by Pragya Singh | 11 months ago

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