Molarity

Front

What is molarity?

Back

Molarity is a measure of concentration, defined as the number of moles of solute per liter of solution (mol/L).

Front

How is molarity calculated?

Back

Molarity (M) = moles of solute / liters of solution.

Front

What is the unit of molarity?

Back

The unit of molarity is moles per liter (mol/L).

Front

If you have 2 moles of NaCl in 1 liter of solution, what is the molarity?

Back

2 M (2 moles per liter).

Front

What happens to the molarity if you dilute a solution?

Back

The molarity decreases when a solution is diluted.

Front

What is the molarity of a solution containing 5 moles of solute in 2 liters of solution?

Back

2.5 M (5 moles / 2 liters).

Front

True or False: Molarity can be used to compare the concentration of different solutions.

Back

True.

Front

What is the molarity of a solution if 0.5 moles of solute are dissolved in 0.25 liters of solution?

Back

2 M (0.5 moles / 0.25 liters).

Front

How does temperature affect molarity?

Back

Molarity can change with temperature because the volume of the solution may expand or contract.

Front

What is the molarity of a solution containing 1.1 moles of hydrochloric acid in 3.5 liters of solution?

Back

0.31 M (1.1 moles / 3.5 liters).