|
|
| 1. |
Which
instrument would be best suited for use in a volumetric analysis
to find the unknown molarity of base when titrated with a known
acid? |
| (A) |
Graduated cylinder |
| (B) |
Pipette |
| (C) |
250 mL beaker |
| (D) |
Burette |
| (E) |
Triple beam balance |
|
|
| 2. |
In a neutralization
reaction performed in lab, a student mixed 0.20 M NaOH with 0.10
M HCl until the reaction was complete. After the liquid left in
the container was dried, which of the following statements must
be true? |
|
I. The student produced a salt and water. All that was left
in the container was the salt.
II. The total mass of the products in the evaporating dish
at the end of the experiment had a lower mass than before heating.
III. The student was left with an ionically bonded, white,
crystalline solid.
|
| (A) |
I only |
| (B) |
II only |
| (C) |
I and II only |
| (D) |
I and III only |
| (E) |
I, II, and III all are true |
|
|
| 3. |
Which of
the following laboratory techniques would not be a physical change
in components of a mixture? |
| (A) |
Chromatography |
| (B) |
Precipitation |
| (C) |
Filtering |
| (D) |
Distillation |
| (E) |
Evaporation |
|
