1. Chem HW 7-2

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

3. 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

4. ) ) ( ( = 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
= mol KI
1.00 L
39.10g g = g ( )
g KI
0.125 mol KI
= 20.8 g KI
1 mol KI

5. 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

6. 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) = g ( )
g C6H12O6
8.00 mol C6H12O6
= 1440g C6H12O6
1 mol C6H12O6

7. 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

8. 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 = mL
McVc = MdVd
Vc =
Md * Vd Mc
Vc =
6.00 mol/L * 500. mL
12.4 mol/L
= 242 ml

9. 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

10. 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 = L
McVc = MdVd
Vc =
Md * Vd Mc
Vc =
1.00 mol/L * 0.100L
18.0 mol/L = L
= 5.56 ml

11. 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

12. 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 = L
McVc = MdVd
Vc =
Md * Vd Mc
Vc =
3 mol/L * 0.025L
15.0 mol/L = L
= 5.00 ml

13. 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