M EASURING C ONCENTRATION

M OLARITY Measure of the concentration that tells the number of moles of solute in one liter of solution Symbol – M Molarity = moles solute / liters solution

W HAT IS THE MOLARITY OF 3.5L OF A SOLUTION THAT CONTAINS 90.0 G OF N A C L ? A) 26 M B) 1.5 M C) 0.44 M D) 2.3 M

W HAT IS THE MOLARITY OF A SOLUTION COMPOSED OF 5.85 G OF KI IN.125L OF SOLUTION ? A) 0.28 M B) 47 M C) 3.6 M D) M

H OW MANY MOLES OF HC L ARE PRESENT IN 0.8L OF A 0.50 M SOLUTION ? A) 0.63 moles B) 0.40 moles C) 1.6 moles D) 14.6 moles

H OW MANY GRAMS OF H 2 SO 4 ARE PRESENT IN 0.500L OF A M SOLUTION ? A) g B) 3.33 g C) 29 g D) 7.4 g

M OLALITY Moles of solute per kilogram of solvent Symbol – m Molality = moles solute/ kg solvent

W HAT IS THE MOLALITY OF A SOLUTION THAT CONTAINS 17.1 G OF C 12 H 22 O 11 DISSOLVED IN 125 G OF WATER ? A) 137 m B) m C) 0.40 m D) 6.25 m