Molality and Colligative Properties

Quiz
•
Chemistry
•
10th - 11th Grade
•
Hard
Standards-aligned
Charles Martinez
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The freezing point of a solution is ___________ that of a pure solvent
more than
less than
equal to
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The boiling point of a solution is ___________ that of a pure solvent
more than
less than
equal to
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Solution A contains 0.1 mol of sucrose, dissolved in 500. g of water. Solution B contains 0.1 mol of sodium chloride, dissolved in 500. g of water. Which fo the following statements about theses solutions is true?
Both solutions have the same vapor pressure.
Solution A would boil at a higher temperature than solution B would.
Solution A would freeze at a higher temperature than solution B would.
Both solutions would boil at the same temperature.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
molality is
the moles of solute in 1g of solvent
the moles of solute in 1g of solution
the moles of solute in 1kg of solvent
the moles of solute in 1kg of solution
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calculate the approximate boiling point (in oC) of a solution of 285 g of magnesium chloride in 2.0 kg of water. (Kb=0.51 oC/m)
103.1 oC
101.6 oC
102.3 oC
104.8 oC
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If 4.27 g sucrose (C12H22O11) are dissolved in 15.2 g water, what is the boiling point of the resulting solution? Kb for water = 0.512°C/m. ΔTb = i x Kb x m.
100.42 oC
10.42 oC
100 oC
42 oC
None of them
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Colligative properties are dependent only on the number of particles in a solution, and not their identity.
True
False
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