Solutions

Chunky Boards!!!!

Why does CO2 (aq) represent a homogeneous mixture?

CO2 (aq) is a solution which contains a mixture CO2 and water. Solutions are homogeneous mixtures.

Which solution will boil at the highest temperature? Why?

A. 2 moles of NaClO3 dissolved in 1,000 g H2O

B. 2 moles of Na2CrO4 dissolved in 1,000 g H20

A solution in which the crystallizing rate of the solute equals the dissolving rate of the solute must be

A. dilute

B. saturated

C. unsaturated

D. concentrated

When calcium chloride is dissolved in water, to which end of the adjacent water molecules will a chloride ion be attracted?

A. The hydrogen end, which is the positive pole.

B. The oxygen end, which is the positive pole.

C. The hydrogen end, which is the negative pole.

D. The oxygen end, which is the negative pole.

Which of the following statements describes KCl (aq)?

A. KCL is the solute in a hetrogeneous mixture.

B. KCL is the solvent in a hetrogeneous mixture.

C. KCL is the solute in a homogeneous mixture.

D. KCL is the solvent in a homogeneous mixture.

Ionic solids will most likely dissolve in

A. H2O(l) , which is a nonpolar solvent

B. CCl4 (l) , which is a polar solvent

C. H2O(l) , which is a polar solvent

D. CCl4 (l) , which is a nonpolar solvent

A change in pressure would have the greatest effect on the solubility of

A. Solid in a liquid

B. Liquid in a solid

C. Liquid in a liquid

D. Gas in a liquid

Which solution is the most concentrated?A. 4 moles of solute dissolved in 8 liters of solution

B. 6 moles of solute dissolved in 4 liters of solution

C. 2 moles of solute dissolved in 3 liters of solution

D. 1 moles of solute dissolved in 1 liters of solution

Which solution contains the greatest number of moles of solute?

A. 0.5 L of 2 M

B. 2 L of 2 M

C. 2 L of 0.5 M

D. 0.5 L of 0.5 M

What is the molarity of a solution that contains 40. grams of NaOH in 0.50 liter of solution?

1.0 M 0.25 M

2.0 M 0.50 M

A 500. gram sample of aqueous potassium chloride solution contains 0.025 grams of solute. What is the concentration of the solution in parts per million?

A. 50. ppm

B. 2.5 x 104 ppm

C. 250. ppm

D. 5.0 x 10-5 ppm

A solution of KCl(aq) contains 15 grams of solute in 85 grams of water. What is the concentration of the solution in percent by mass?

A. 2.0%

B. 6.0%

C. 0.20%

D. 15%

Based on the Solubility Guidelines chemistry reference table, which of the following is the most soluble compound?

A. AgIB. Ag2SO4

C. AgNO3

D. Ag2CrO4

Based on the solubility Curves chemistry reference table, what will cause the solubility of KNO3(s) to increase?

A. Increasing the temperature

B. Decreasing the temperature

C. Decreasing the pressure

D. Increasing the pressure

What is a solute?

the substance being dissolved

What is a solvent?

the substance doing the dissolving

What is distillation?

physical separation based on the boiling points of the substances in the mixture