Concentration Simple concepts, which are helpful to solve simple Chemistry problems
Concentration Concentration of a constituent in the mixture is defined as the ratio of the constituent’s amount to the total volume of a mixture. Constituent’s amount can be expressed in various units, depending on that we have Mass concentration Molar concentration Number concentration Volume concentration
Mass concentration The mass concentration is defined as the ratio of the mass of a constituent to the volume of the mixture mi/V • ᵨi - mass concentration • mi - mass of a constituent • V- volume of the mixture
The SI unit is kg/m3
ᵨ
i=
Molar concentration
The molar concentration is defined as the ratio of the amount of a constituent (in moles) to the volume of the mixture. ci = ni/V ci - molar concentration ni – number of moles of a constituent V - volume of the mixture
The SI unit is mol/m3
Number concentration The number concentration is defined as the ratio of the number of entities of a constituent in a mixture to the volume of the mixture. Ci = Ni/V Ci - number concentration Ni - number of entities of a constituent V - volume of the mixture
The SI unit is 1/m3
Volume concentration
The volume concentration is defined as the ratio of the volume of a constituent to the volume of the mixture.
ᵩ
i = Vi/V
ᵩi
- volume concentration
Vi - volume of a constituent V - volume of the mixture
volume concentration dimensionless.
Simple laws, which are very helpful to solve chemistry problems.