All we need to know about Molarity

Key points

Mixtures with uniform composition are called homogeneous mixtures or solutions.

Mixtures with non-uniform composition are heterogeneous mixtures.

The chemical in the mixture that is present in the largest amount is called the solvent, and the other components are called solutes.

Molarity or molar concentration is the number of moles of solute per liter of solution, which can be calculated using the following equation:

\text{Molarity}= \dfrac{\text{mol solute}}{\text{L of solution}}Molarity=

​L of solution

​

​mol solute

​​ M, o, l, a, r, i, t, y, equals, start fraction, m, o, l, space, s, o, l, u, t, e, divided by, L, space, o, f, space, s, o, l, u, t, i, o, n, end fraction

Molar concentration can be used to convert between the mass or moles of solute and the volume of the solution.

Introduction: Mixtures and solutions

In real life, we often encounter substances that are mixtures of different elements and compounds. One example of a mixture is the human body. Did you know that the human body is approximately 57\%57%57, percent water by mass? We are basically an assortment of biological molecules, gases, and inorganic ions dissolved in water. I don't know about you, but I find that pretty mind-boggling!