You know that an unlabeled water bottle contains at least some water. You measure the freezing point of the unknown substance and find that it freezes at a temperature lower than 0 degrees Celsius at 1 atmosphere pressure. Which of the following can you conclude?
A. The substance is pure water.
B. The substance will have a boiling point that is less than 100 degrees Celsius.
C. The substance will have a vapor pressure that is greater than that of pure water.
