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