Multiple Choice
Which of the following solutes will lower the freezing point of 1 L H_2O the most when 1 mole is dissolved in it?
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14. Solutions
Freezing Point Depression
Multiple Choice
Which of the following is closest to the freezing point of argon in kelvin?
A
0 K
B
273.2 K
C
195.8 K
D
83.8 K
Verified step by step guidance1
Understand that the freezing point of a substance is the temperature at which it changes from liquid to solid under standard pressure.
Recall that argon is a noble gas with a very low freezing point because it is a simple monoatomic gas with weak intermolecular forces (London dispersion forces).
Recognize that 0 K is absolute zero, which is the lowest possible temperature and not a freezing point of any substance.
Note that 273.2 K corresponds to the freezing point of water, which is much higher than argon's freezing point.
Identify that argon's freezing point is much lower than water's and closer to the value 83.8 K, which is consistent with its physical properties as a noble gas.
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