Chem HW 7-2

250. mL of 0.300 M KMnO4 from solid KMnO4. ( ) 0.300 moles KMnO4 .250 L = 0.0750 mol KMnO4 1.00 L 39.098g + 54.938g + 4(15.999) = 158.032 ( ) 158.032 g KMnO4 0.0750 mol KMnO4 = 11.9 g KMnO4 1 mol KMnO4

KMnO4 Detailed Directions: Dissolve _____ g of _______ in enough water to prepare _______ mL of solution. Diagram steps below: 11.9 250 ml 11.9 g KMnO4 Dissolve Add water to 250 ml

) ) ( ( = 0.125 mol KI = 20.8 g KI 500. mL of 0.250 M KI from solid KI 0.250 moles KI 0.500 L = 0.125 mol KI 1.00 L 39.10g + 126.90g = 166.00g ( ) 166.00 g KI 0.125 mol KI = 20.8 g KI 1 mol KI

KI Detailed Directions: Dissolve _____ g of _______ in enough water to prepare _______ mL of solution. Diagram steps below: 20.8 500 ml 20.8 g Dissolve Add water to 500 ml

2.00 L of 4.00 M C6H12O6 from solid C6H12O6 ) ( 4.00 mole C6H12O6 = 8.00 mol C6H12O6 2.00 L solution 1 L solution 6(12.01 g) + 12(1.01 g) + 6(16.00 g) = 180.18 g ( ) 180.18 g C6H12O6 8.00 mol C6H12O6 = 1440g C6H12O6 1 mol C6H12O6

C6H12O6 Detailed Directions: Dissolve _____ g of _______ in enough water to prepare _______ of solution. Diagram steps below: 1440 2.00 L 1440g C6H12O6 Dissolve Add water to 2.00 L

4. 500. mL of 6.00 M from 12.4 M (concentrated) HCl stock solution. Solve for.. Mc = 12.4 M Vc = ? Md = 6.00 M Vd = 500. mL McVc = MdVd Vc = Md * Vd Mc Vc = 6.00 mol/L * 500. mL 12.4 mol/L = 242 ml

12.4 Recipe: Dilute ____ mL of the _____ M stock solution with enough water to prepare _______ mL of solution. Diagram steps below: 242 500 242 ml of 12.4 M stock mix

5. 100. mL of 1.00 M H2SO4 from 18.0 M (concentrated) H2SO4. Solve for.. Mc = 18.0 M Vc = ? Md = 1.00 M Vd = 0.100 L McVc = MdVd Vc = Md * Vd Mc Vc = 1.00 mol/L * 0.100L 18.0 mol/L = 0.00556 L = 5.56 ml

18.0 Recipe: Dilute ____ mL of the _____ M stock solution with enough water to prepare _______ mL of solution. Diagram steps below: 5.56 100 5.56 ml of 18.0 M stock mix

McVc = MdVd Vc = Vc = 6. 25.0 mL of 3.00 M HNO3 from 15.0 M HNO3 Solve for.. Mc = 15.0 M Vc = ? Md = 3.00 M Vd = 0.025 L McVc = MdVd Vc = Md * Vd Mc Vc = 3 mol/L * 0.025L 15.0 mol/L = 0.00500 L = 5.00 ml

15.0 Recipe: Dilute ____ mL of the _____ M stock solution with enough water to prepare _______ mL of solution. Diagram steps below: 5.00 25.0 5.00 ml of 15.0 M stock mix