Molarity and Dilutions Review

Front

What is Molarity?

Back

Molarity (M) is a measure of concentration defined as the number of moles of solute per liter of solution.

Front

How do you calculate Molarity?

Back

Molarity = moles of solute / liters of solution.

Front

What is a concentrated solution?

Back

A concentrated solution has a large amount of solute in a small volume of solvent.

Front

What is a dilute solution?

Back

A dilute solution has a small amount of solute in a large volume of solvent.

Front

What is a stock solution?

Back

A stock solution is a highly concentrated solution that is meant to be diluted to a lower concentration.

Front

What is the formula for dilution?

Back

C1V1 = C2V2, where C1 and V1 are the concentration and volume of the stock solution, and C2 and V2 are the concentration and volume of the diluted solution.

Front

How do you prepare a diluted solution from a concentrated solution?

Back

To prepare a diluted solution, measure the required volume of the concentrated solution and add enough solvent to reach the desired final volume.

Front

Calculate the grams of NaOH in 10.0 mL of a 2.0 M NaOH solution.

Back

0.8 grams.

Front

What is the molarity of a solution containing 40.0 g of NaCl in 500.0 mL of water?

Back

1.37 M.

Front

What is the relationship between moles, mass, and molar mass?

Back

Moles = mass (g) / molar mass (g/mol).