abeka chemistry quiz 19

What is the concentration of a solution containing 0.1 mol of KMnO4, dissolved in 500. g of water?

0.2 m

What is the concentration of a solution containing 2.4 mol of NaCl dissolved in 3.0 L of water?

0.80 M

A chemist wishes to prepare 1.0 L of 0.10 M H2SO4 by diluting concentrated (18 M) H2SO4; how much concentrated H2SO4 is required?

6.0 mL

Which of the following statements best describes what is meant when a liquid and its vapor are said to be in equilibrium?

The rates of evaporation and condensation are equal.

Colligative properties depend primarily on the _____ of the solution.

concentration

As the temperature of a given liquid is increased, its vapor pressure _____.

increases

The freezing point of a solution containing a nonvolatile solute is _____ than the freezing point of the pure solvent.

lower

If a large concentration of salt were added to pure water in a covered beaker, the vapor pressure of the water would be expected to decrease.

true

The boiling point of a solution containing a nonvolatile solute is higher than the boiling point of the pure solvent.

true

When calculating a solute's effect on boiling water and freezing points, concentration should be measured as molality.

true