Molarity/ Solubility Rules

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 molar mass of NaCl?

Back

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

Front

What is the solubility rule for nitrates?

Back

All nitrates (NO3-) are soluble in water.

Front

Is calcium carbonate (CaCO3) soluble or insoluble?

Back

Calcium carbonate (CaCO3) is insoluble in water.

Front

Is potassium bromide (KBr) soluble or insoluble?

Back

Potassium bromide (KBr) is soluble in water.

Front

What is the solubility rule for hydroxides?

Back

Most hydroxides are insoluble, except for those of alkali metals and some alkaline earth metals (like Ba(OH)2 and Ca(OH)2).

Front

How many grams of solute are in 125.0 mL of 5.00 M NaCl?

Back

There are 36.5 g of NaCl in 125.0 mL of 5.00 M NaCl.

Front

What is the molarity of 4 g of NaCl in 3,800 mL of solution?

Back

The molarity is 0.018 M.

Front

What is the solubility rule for sulfates?

Back

Most sulfates (SO4^2-) are soluble, except for those of barium, lead, and calcium.