Section 3: Dilutions Dilutions Calculations. DDilutions llowers concentration, or molarity but…...
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Section 3: Dilutions • Dilutions • Calculatio ns
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Transcript of Section 3: Dilutions Dilutions Calculations. DDilutions llowers concentration, or molarity but…...
Section 3: Dilutions
• Dilutions• Calculations
Dilutions
lowers concentration, or molarity
but…
total moles of solute does not change
A. Dilutions
mol L
M = mol
LM =
A. Dilutions
6 molin 100 mL
6 molin 200 mL
same# of mol
A. Dilutions
Dilutions
A. Dilutions
initial Molarity
initial Volume
Molarity of dilute solution
Volume of dilute solution
How many mL of 2.00 M MgSO4 must be diluted to prepare 100 mL of 0.400 M MgSO4?
V1 = (0.400 M) x (100 mL) = (2.00 M)
B. Calculations
Finding Volume (V1)
20.0 mL
M1
V2 M2
V1
(2.00 M) x V1 = (0.400 M) x (100 mL)
200 mL of 10.0 M NaOH is diluted to 500 mL, what is the molarity of the dilute solution?
M2 = (10.0 M) x (200 mL) = (500 mL)
B. Calculations
Finding Molarity (M2)
4.00 M
M1 V2
M2
V1
(10.0 M) x (200 mL) = M2 x (500 mL)
