Properties of Solutions

   1) Which of the following statements are true if you have 500.0 mL of [MgBr₂] = 0.100 M?

(a) There are 500.0 mL of solvent.

(b) For every 1.00 L of solution, there is 0.100 mole of MgBr₂.

(c) Water is the solute.

(d) If you add water to the solution, the molarity of MgBr₂ will decrease.

   2) Which of the following solutions has the greatest concentration of Na⁺ ions?

(a) 0.026 M Na₂CO₃

(b) 0.014 M NaCl

(c) 0.013 M Na₃PO₄

(d) 0.032 M NaNO₃

   3) A common concentration unit is percent weight per volume (%W/V) which is the number of gram of solute in 100. mL of solution. A bottle of hydrogen peroxide contains 2.5 %W/V hydrogen peroxide (H₂O₂). What is the molar concentration of hydrogen peroxide in the solution?

(a) 0.0073 M

(b) 0.73 M

(c) 0.073 M

(d) 7.3 M

   4) Which of the following statements are true if you have 700.0 mL of [Na₂SO₄] = 0.300 M?

(a) There are 700.0 mL of solvent.

(b) Na₂SO₄ is the solute.

(c) If you add Na₂SO₄ to the solution, the molarity of the solution will increase.

(d) There is 0.300 mole of Na₂SO₄ in 700.0 mL of solution.

   5) Which of the following solutions has the greatest concentration of K⁺ ions?

(a) 0.084 M KBr

(b) 0.031 M K₃PO₄

(c) 0.053 M KCH₃CO₂

(d) 0.042 M K₂SO₄

   6) Which of the following statements are true if you have 400.0 mL of [HNO₃] = 1.40 M?

(a) For every 1.4 L of solution, there is 1 mol of HNO₃.

(b) HNO₃ is the solvent.

(c) There are 400.0 mL of solution.

(d) If you add HNO₃ to the solution, the molarity of the solution will increase.

   7) A common concentration unit is percent weight per volume (%W/V) which is the number of gram of solute in 100. mL of solution. A bottle of lye contains 25 %W/V NaOH. What is the molar concentration of sodium in the solution?

(a) 6.25 M

(b) 0.626 M

(c) 0.0625 M

(d) 0.00625M

   8) Which of the following solutions has the greatest concentration of ClO₃^- ions?

(a) 0.069 M NH₄ClO₃

(b) 0.024 M Al(ClO₃)₃

(c) 0.077 M LiClO₃

(d) 0.032 M Ca(ClO₃)₂

   9) Which of the following statements are true if you have 200.0 mL of [NH₄Cl] = 0.150 M?

(a) Water is the solute.

(b) If you add water to the solution, the molarity will decrease.

(c) NH₄Cl is the solvent.

(d) There is 0.150 mole of NH₄Cl in 200.0 mL of solution.

 10) Which of the following solutions has the greatest concentration of Cl^- ions?

(a) 0.055 M NH₄Cl

(b) 0.026 M AlCl₃

(c) 0.082 M LiCl

(d) 0.044 M SrCl₂

Home	Online Assignments