Lesson: Molar Concentrations Chemistry

In this lesson, we will learn how to calculate the molar concentration of a solution from the solvent volume and mass or moles of the dissolved solute.

Lesson Plan

Objectives

Students will be able to

identify the formula ,
use the formula to calculate the concentration of a solution when given its volume and the number of moles,
convert from moles per dm³ to grams per dm³,
calculate the concentration when given the mass of a solid substance dissolved in a given volume,
recall the relationships between units of dm³, liter, cm³, and mL.

Prerequisites

Students should already be familiar with

mole calculations,
units of volume.

Exclusions

Students will not cover

titration experiments or calculations,
solubility,
percentage concentrations.

Lesson Video

Sample Question Videos

05:18
02:56
04:23

Lesson Worksheet

Q1:

Calculate the volume in L of a 0.125 M boric acid solution containing 0.500 mol of boric acid.

Q2:

A 600 mL solution contains 10.1 g of magnesium chloride. What is the molar concentration of magnesium chloride in this solution? Give your answer in scientific notation to two decimal places. [, ]

Q3:

1.0 liter of a sodium chloride solution contains 2.0 moles of sodium chloride. What is the concentration of sodium chloride?