Exam 8: Solutions

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices. (1) A solution of concentration 7.6 %(m/m) contains 7.6 grams of solute per 1 liter of solution. (2) The use of antifreeze in car radiators in the winter and the use of rock salt in making homemade ice cream are based on the same chemical principle. (3) One mole of any molecular solute raises the boiling point of one kilogram of water by 1.86^oC..

Choose the correct numerical value for the molarity from the response list for a solution using 10.0 g of solute whose molar mass is 50.0 g in 100.0 mL solution.

Using the response list, characterize the osmotic pressure for a 5.0% (m/v) NaCl with respect to cells.

Consider the following substances and their polarities: A - polar, B - polar, C - nonpolar, D - nonpolar. It is true that:

For a solution composition of 10.0 g solute in 100.0 g solution; choose the correct numerical concentration of % (m/m).

For a solution composition of 5.00 g solute in enough solvent to give 50.0 g solution; choose the correct numerical concentration of % (m/m).

In which of the following sets of ionic compounds are all members of the set insoluble in water?

For the set of ionic compounds, NaNO₃, KNO₃, NH₄NO₃, choose the correct characterization of their solubilities in water from the response list.

In which of the following pairs of properties are both members of the pair colligative properties?

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices. (1) The osmolarity of a 3.0 M NaCl solution is greater than the osmolarity of a 2.0 M Na₂SO₄ solution. (2) A solution with just two components must always be a liquid. (3) Red blood cells will shrink in size when placed in an isotonic solution.

In a solution, the solvent is

Choose the correct numerical value for the molarity from the response list for a solution prepared from 0.10 mole solute in 1.0 L of solution.

Choose the correct numerical value for the molarity from the response list for a solution using 50.0 mL of 0.40 M solution diluted to a final volume of 0.20 L.

Calculate the grams of NaOH present in 9.0 mL of a 8.0% (m/v) NaOH solution.

Which of the following amounts of solution contain 20.0 g of solute?

Using the response list, characterize the osmotic pressure for a 0.80% (m/v) MgCl₂ with respect to cells.

In which of the following pairings are the terms closely related?

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices. (1) The Tyndall effect involves light-scattering by colloidal-sized particles. (2) Aqueous solutions of 0.1 M KCl and 0.1 M glucose would have the same freezing point because the solvent is water in both cases. (3) Percent by volume is a concentration unit used when both solute and solvent are liquids.

Crenation of red blood cells occurs when the cells are placed in a(n)

For a solution composition of 10.0 g solute and 90.0 g solvent; choose the correct numerical concentration of % (m/m).