Question

why for solids and liquids we take presentation one in deriving the expression of KC​

Answer 1

Answer:

Answer

The concentration of solid or liquid is

volume in L

Number of moles

=

Volume×molar mass

Mass

=

Molar mass

Density

.

At constant temperature, the density and molar mass of pure solid and liquid are constant.

Due to this, their molar concentrations are constant and are not included in the equilibrium constant.