Concept #1: Some of the most commonly used volumetric instruments are discussed.
Concept #2: The following instruments deal with the transportation and isolation of solids.
Example #1: If a scientist wishes to measure out exactly 25.0 mL of a 0.100 M HCl solution and add it to a 0.200 M NaOH solution, which instrument would be most useful?
a. Transfer pipet
b. Soxlet extractor
c. Graduated cylinder
d. Volumetric flask
e. Buret
Example #2: What is the molarity of a solution made by mixing 200 mL pure water with 100 mL of 0.75 M KCl (aq)?
a. 0.10 M KCl (aq)
b. 0.25 M KCl (aq)
c. 0.50 M KCl (aq)
d. 1.50 M KCl (aq)
e. 2.25 M KCl (aq)
Example #3: How can a 100-fold dilution be achieved?
a. 1 part solvent to 99 parts solution.
b. 90 parts solvent to 10 parts solution.
c. 99 parts solvent to 1 part solution.
d. 100 parts solvent to 1 part solution.
e. 10 parts solvent to 1 part solution.
