Though the two terms are subject to being confused with one another, the molality and molarity of a weak aqueous solution are nearly the same, as one kilogram of water (solvent) occupies the volume of 1 liter at room temperature and a small amount of solute has little effect on the volume.
Meskipun kedua istilah tersebut saling dibingungkan satu sama lain, molariitas dan molaritas larutan berair lemah hampir sama, karena satu kilogram air (pelarut) menempati volume 1 liter pada suhu kamar dan sejumlah kecil zat terlarut memiliki sedikit efek pada volume.