Review solutions 2

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 the number of grams of solute in a solution?

Back

To calculate the grams of solute, use the formula: grams = molarity (M) × volume (L) × molar mass (g/mol).

Front

What is the molar mass of NaCl?

Back

The molar mass of NaCl (sodium chloride) is approximately 58.45 g/mol.

Front

What is a saturated solution?

Back

A saturated solution is a solution that contains the maximum amount of solute that can be dissolved at a given temperature and pressure.

Front

What is a supersaturated solution?

Back

A supersaturated solution is a solution that contains more solute than can normally be dissolved at a given temperature and pressure, often achieved by heating.

Front

What happens to gases' solubility at low temperatures?

Back

Gases are more soluble in liquids at low temperatures.

Front

What happens to gases' solubility at high pressures?

Back

Gases are more soluble in liquids at high pressures.

Front

How do you find the molarity of a solution?

Back

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

Front

What is the molar mass of sucrose (C12H22O11)?

Back

The molar mass of sucrose is approximately 342 g/mol.

Front

If you have 186.55 g of sucrose in 250 mL of water, what is the molarity?

Back

Molarity = (186.55 g / 342 g/mol) / 0.250 L = 2.18 M.