Chemistry

Confusing Molarity and Moles

Students treat molarity as if it is the number of moles in the container.

Quick check

Why students make it

The unit M\mathrm{M} is read as molar, so it can feel like it already counts moles. It actually means moles per liter, so the volume of solution still matters.

The rule done right

Molarity is concentration, M=nVM = \frac{n}{V}, where nn is moles and VV is liters of solution. To find moles, use n=M×Vn = M \times V with volume in liters.

Related resources

molaritymolessolutions