Units of Concentration

Mass Percent, mass-mass percent, %(m/m) =

mass solute/mass solution X 100

Volume percent, volume-volume percent, %(v-v) =

volume solute/volume solution X 100

mass-volume percent, %(m/v) =

mass solute (g)/volume solution(mL) X 100

parts per million ppm (m/m) =

mass solute/mass solution X 10^6

parts per million ppm (v/v) =

volume solute/volume solution X 10^6

parts per million ppm (m/v) =

mass solute(g)/volume solution(mL) X 10^6

Molarity, M

moles solute/L solution

Solution Dilutions

C1V1 = C2V2 (C-Concentration V-Volume)