In this worksheet, we will practice describing colligative properties, which depend on the number of dissolved particles rather than their identity.
Which of the following aqueous solutions has the lowest freezing point?
Meat can be classified as fresh (not frozen) even if it is stored at . Why would meat, despite being mostly water, not freeze at this temperature?
- AThe water molecules are separated from each other in meat, and so cannot combine to form a solid.
- BWater trapped inside cells is too strongly compressed to freeze at this temperature.
- CA supercooled solution is formed, as proteins in the meat inhibit the nucleation of ice crystals.
- DIons and other solutes in the water lower the freezing point.
- EThere is insufficient space in the cells of the meat for water to expand when freezing takes place.
A solution of potassium nitrate, an electrolyte, and a solution of glycerin , a non-electrolyte, both boil at . Which of the following statements is not true?
- AThe solutions have the same freezing-point depression.
- BThe solutions are both homogeneous.
- CThe solutions have the same osmotic pressure.
- DThe solutions have the same electrical conductivity.
- EThe solutions have the same reduction in vapor pressure relative to pure water.