Solutions and concentrations

Front

What is molarity?

Back

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

Front

How do you calculate molarity?

Back

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

Front

What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?

Back

0.018 M.

Front

What happens to solubility when temperature increases?

Back

Increasing temperature generally increases the solubility of solids in liquids.

Front

What is a dilute solution?

Back

A dilute solution is one that contains a small amount of solute relative to the amount of solvent.

Front

What is a concentrated solution?

Back

A concentrated solution contains a large amount of solute relative to the amount of solvent.

Front

What is a saturated solution?

Back

A saturated solution is one in which no more solute can dissolve at a given temperature and pressure.

Front

What is an unsaturated solution?

Back

An unsaturated solution is one that can still dissolve more solute at a given temperature and pressure.

Front

What is a supersaturated solution?

Back

A supersaturated solution contains more solute than can normally dissolve at a given temperature and pressure.

Front

What effect does decreasing the amount of solvent have on solubility?

Back

Decreasing the amount of solvent generally decreases the solubility of a solute.