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Exam 3 Chem. (Ch.7) EXAM 2024 QUESTIONS WITH CORRECT ANS_.pdf
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8/18/24, 3:36 AMExam 3 Chem. (Ch.7)
Jeremiah
Terms in this set (40)
What is the molarity of a solution containing B) 1.30
0.325 moles of solute in 250 mL of solution.
A) 1.30 x 10-3
B) 1.30
C) 0.769
D) 8.13 x 10-2
Colloids can be stabilized by emulsifying True
agents.
Rock candy can be produced by allowing a True
hot, saturated solution of sugar in water to
cool off.
Which of the following is not considered a C) Conductivity
colligative property?
A) vapor pressure
B) boiling point
C) conductivity
D) freezing point
Which of the following would be considered A) salt
a strong electrolyte?
A) salt
B) sugar
C) acetic acid
D) all of the choices
Drinking water can be purified by which of D) all of the choices
the following methods?
A) reverse osmosis
B) distillation
C) ion exchange
Exam 3 Chem. (Ch.7)
D) all of the choices
1/6
, 8/18/24, 3:36 AM
The %(w/v) of a solution is defined as False
%(w/v)= Solute volume/ solution mass x 100
What volume of a 10.00% (w/v) solution of C) 20.0 mL
sugar is needed to provide 2.00 g of sugar?
A) 0.200 liter
B) 1.00 mL
C) 20.0 mL
D) 5.00 mL
Express the following concentration of B) 0.583 M
solution in terms of molarity: 3.00 L of
solution contains 1.75 ml of solute.
A) 5.25 M
B) 0.583 M
C) 1.71 M
D) to little info to know
Which of the following statements relating to D) more than one answer is correct
a solution is not correct?
A) may contain more than one solute
B) may contain only one solute
C) water is always the solvent in a solution
D) more than one correct response given
Iodine, I2, is very slightly soluble in water, a C) it is nonpolar
polar solvent, but quite soluble in toluene, a
nonpolar solvent. What can be inferred
about the nature of the I2 molecule?
A) it is ionic
B) it is polar
C) it is nonpolar
D) nothing can be inferred
When preparing a 2.00 M solution of NaCl in True
water, a volumetric flask could be used to
measure the volume of the solution.
Which compound is most soluble in a polar A) silver nitrate
solvent?
A) silver nitrate
B) silver chloride
C) silver carbonate
D) all are of equal solubility
The following equation can be used when C false
represents either a M or %(w/w)
concentration.
CcVc=CdVd
Putting a celery stick in distilled water results True
in the uptake of water by the celery.
Exam 3 Chem. (Ch.7)
2/6
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