INTRODUCTION TO MOLAR CONCENTRATION OF SOLUTIONS
Recall: mole (mol) – the amount of any pure substance (atoms/molecules/ions) containing 6.02x1023
entities.
Symbol: n
Volume (L) : the space occupied by a solution.
Symbol: V
MOLAR CONCENTRATION – the amount of solute, in mol, dissolved in one litre of solution.
Symbol: C
Formula: molar concentration = amount of solute(mol)
Volume of solution (L)
Or
Ex.1- If 1.7 g of sodium hydroxide, NaOH, is dissolved into distilled water to make 350.0 ml of aqueous
solution, calculate the molar concentration of the sodium hydroxide solution.
Ex.2 – A student needs to make a 0.50 mol/L aqueous solution of iron (III) chloride, FeCl3. What mass,
in grams, of FeCl3 will he need to add to distilled water to make 100.0 ml of aqueous solution.
Ex.3 – A nurse is administering a 0.75 mol/L intravenous (IV) solution of glucose sugar, C6H12O6, to a
patient. If the patient is to receive 23.5 g of glucose, what volume of the solution must she provide for
him?