1. Molarity Problems – IF worksheet

2. 1)MW NaCl = 23 + 35 = 58g NaCl = 1 mole 2)M = moles M = x moles Liters 1.0 L 3)58 g NaCl 1 mole NaCl = 1 mole NaCl 58 g NaCl M = 1 mole NaCl = 1.0 M 1.0 L

3. 1)MW AgNO 3 = 108 + 14 + 3 (16)= 170g AgNO 3 = 1 mole 2)M = moles M = x moles Liters 500 L 3)10 g AgNO 3 1 mole AgNO 3 = 0.06 moles AgNO 3 170 g AgNO 3 M = 0.06 mole AgNO 3 =0.00012 M 500 L L

4. 1)MW KNO 3 = 39+ 14 + 3 (16)= 101g KNO 3 = 1 mole 2)M = moles 0.5 = x moles x moles = 0.5 (2.0) = 1.0 moles Liters 2.0 L KNO 3 3)1 mole KNO 3 101g KNO 3 = 101 g KNO 3 1 mole KNO 3

5. 1)MW KCl = 39 + 35 = 74g KCl = 1 mole 2)M = moles 0.25 = x moles Liters y L 3)5.0 g KCl 1 mole KCl = 0.07 moles KCl 74 g KCl 0.25 = 0.07 mole KCl y = 0.3L y L

6. 1)MW CuSO 4 = 64+ 32+ 4 (16) = 160g CuSO 4 = 1 mole 2)M = moles 0.1 = x moles x moles = 0.1(100) = 10 moles Liters 100 L CuSO 4 3)10.0 molesCuSO 4 160 g CuSO 4 = 1600 g CuSO 4 1 mole CuSO 4 L