solids and liquids

[alanaarchbold]

Why don't the molar concentrations of solids and liquids change in a reaction?

[505095793]

Pure liquids and solids have definite molar concentrations. Gases and aqueous solutions have variable molar concentrations because there is a certain amount of moles of a substance in a certain volume, hence the molarity= moles/Liters. Therefore when pure solids and liquids are involved in a reaction there are no changes in the molarity (mol/L) so the concentrations are constant.

[005113695]

Solid and Liquid concentrations change very little, and the amount is insignificant so that they don't need to be included.

[Jchellis 1I]

So because they are constants they have no effect on whether the reaction favors the reactants or the products?

[Anjali 4A]

Because molar concentration of a pure substance (solid or liquid) does not change in a reaction and is therefore not included in equ. constant

[allisoncarr1i]

So because they are constants they have no effect on whether the reaction favors the reactants or the products?

yes that is correct