CHEM 1124Q Lecture Notes - Lecture 24: Dimensionless Quantity, Hydronium, Gravimetric Analysis
10 May 2018
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Dilution, pH scale, and Acid-Base Titrations
Dilution and Serial Dilution
●Because most volumes measured in the laboratory are in milliliters rather than liters, it
is worth pointing out that the equation can be written as
○L LMc×mc=Md×md
●A series of dilutions that may be used to prepare a number of increasingly dilute
solutions is called Serial Dilution.
○Step 1: Prepare a dilute solution from the stock
○Step 2: Dilute a portion of the prepared solution to make a more dilute solution
○Step 3: Repeat as needed
★What volume of 18.0 M H2SO4, a common laboratory stock solution, must be used to
prepare 250.0 mL of 6.00 M H2SO4?
(a) 750 mL
(b) 83.3 mL
(c) 432 mL
(d) None of the above
★Using square-bracket notation, express the concentration of
○chloride ion in a solution that is 1.02 M in CrCl3
■[C ] .06 Ml−= 3
●nitrate ion in a solution that is 0.451 M in Al(NO3)3
■[] .35 MNO3
−= 1
● Na2CO3 in a solution in which [CO3
2-] = 0.124 M.
○[CO ] .124M Na2 3 = 0
Document Summary
Because most volumes measured in the laboratory are in milliliters rather than liters, it is worth pointing out that the equation can be written as. M c m c = m d m d. A series of dilutions that may be used to prepare a number of increasingly dilute solutions is called serial dilution. Step 1: prepare a dilute solution from the stock. Step 2: dilute a portion of the prepared solution to make a more dilute solution. What volume of 18. 0 m h 2 so 4 , a common laboratory stock solution, must be used to prepare 250. 0 ml of 6. 00 m h 2 so 4 ? (a) 750 ml (b) 83. 3 ml (c) 432 ml (d) none of the above. Using square-bracket notation, express the concentration of. Chloride ion in a solution that is 1. 02 m in crcl 3. Nitrate ion in a solution that is 0. 451 m in al(no 3 ) 3.
