Molar Concentration

[Shuyi Yu 1B]

If you are given a molar concentration for a molecule with a stoichiometric coefficient does that concentration need to be multiplied by the stoichiometric coefficient to find the concentration of the single molecule?

[Noah Cook 3O]

No, the molar concentration given in a problem will be exactly what is stated for that single molecule. However, as the stochiometric coefficients are a ratio of moles of different molecules, you would have to take into account the coefficients when trying to find an unknown concentration of a different molecule.

[Aili Ye 4L]

No, there isn’t such a thing as “concentration of a single molecule”. You should find the concentration overall of the molecule and take into consideration the stoichiometric coefficients is different reactants and products when calculating unknown concentrations though.

[maldonadojs]

The only time you use the coefficients is when you’re trying to 1. solve an ice box and 2. using K equation.
K=[P]^coefficient/[R]^coefficient