Molarity and solutions practice

Front

What is molarity?

Back

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

Front

How do you calculate molarity?

Back

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

Front

What is the molarity of a solution containing 60.0 g of NaOH in 0.5 L?

Back

3.0 M

Front

How many moles are in 2.5 L of a 3.8 M solution?

Back

9.5 mol

Front

What is the molarity of a solution with 33.6 g of KOH in 1.50 L?

Back

0.4 M

Front

What is a saturated solution?

Back

A saturated solution is one in which the solvent has dissolved the maximum amount of solute at a given temperature.

Front

In a solution, what is the solute?

Back

The solute is the substance that is dissolved in the solvent; for example, the powder in a mixture of powder and water.

Front

What is the formula to find moles from mass?

Back

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

Front

What is the molar mass of NaOH?

Back

The molar mass of NaOH is approximately 40.0 g/mol.

Front

If you have 1.0 L of a 2.0 M NaCl solution, how many moles of NaCl do you have?

Back

2.0 moles.