Mixtures and Solutions and Concentration

In a solution, the solute is:

• always a gas

• always water

• the substance that is dissolved

• the substance in the greatest amount

Which of the following statements best describes the phrase "like dissolves like"?

• The only true solutions are formed when water dissolves a nonpolar solute.

• A solvent and a solute with similar attractive forces will easily make a solution.

• The only true solutions are formed when water dissolves a polar solute.

• A solvent will dissolve a solute that has a similar mass.

Which of the following can be classified as a colloid?

• Grape juice

• Kool-Aid

• Homogenized milk

• Blood

Which of the following is an example of a true solution?

• mayonnaise

• apple juice

• blood

• homogenized milk

Which of the following mixtures is not a solution?

• fresh air

• stainless steel

• chalk and cheese

• sea water

A saturated solution:

• contains no double bonds

• will rapidly precipitate if a seed crystal is added.

• contains as much solvent as it can hold

• contains dissolved solute in equilibrium with undissolved solid

In which of the following solutions would pressure be expected to have the largest effect on solubility?

• solution of a liquid in a liquid

• solution of a gas in a liquid

• solution of a solid in a solid

• solution of a solid in a liquid

Henry's law states the following:

• the solubility of a gas in a liquid is directly related to the temperature of the liquid

• the solubility of a gas in a liquid is directly related to the pressure of the gas above the liquid

• the solubility of a gas in a liquid is inversely related to the pressure of the gas above the liquid

• the solubility of a gas in a liquid is inversely related to the temperature of the liquid

The transport of glucose molecules across a cell membrane occurs via:

• passive diffusion

• facilitated transport

• active transport

The solubility of a gas increases with temperature.

• true

• false