WorksheetsChemistry Chapter 15 and 17 Practice Test
Total questions: 20
Worksheet time: 30mins
If you have 2.5 moles of glucose in 0.5 L of solution, what is the concentration of the solution?
0.5 M
1.25 M
2.5 M
5 M
What is the molarity of a solution containing 45 g of NaCl in 300 mL of solution?
0.15 M
230 M
2.6 M
8.8 M
Which unit should be used for solution concentration?
mol/L
L/mol
J/g
mol2/L•s
How many moles of sodium nitrate are in 0.75 L of a 0.50 M NaNO3 solution?
0.66 mol
0.37 mol
3.1 mol
24 mol
How can you decrease the concentration of a solution?
You cannot decrease the concentration.
Add solvent.
Pour out some of the solution.
Add solute.
Explain how you would prepare a solution of salt water, NaCl(aq), with a molarity of 2.5 M.
Add water to 146 grams of salt to make 1.0 L of solution.
Add water to 59 grams of salt to make 1.0 L of solution
Add water to 30 grams of salt to make 1.0 L of solution
Add water to 117 grams of salt to make 1.0 L of solution.
How can milliliters (mL) be converted into liters (L)?
multiply mL by 100
divide mL by 100
multiply mL by 1000
divide mL by 1000
Use the solubility table to answer the question. Suppose you mix lithium chloride and silver (I) nitrate solutions. What is the precipitate (solid) that forms ? (S: soluble, N: not soluble)
ClNO3
AgCl
LiAg
LiNO3
Use the solubility table to answer the question. Which pair of solutions will produce a clear solution of ions in water when they are mixed? (S: soluble, N: not soluble)
silver (I) nitrate and lithium phosphate
sodium sulfate and mercury (I) nitrate
magnesium sulfate and potassium chloride
sodium hydroxide and nickel (II) chloride
Which of the following is the correct net ionic equation for the reaction?
K2CO3(aq) + Ca(NO3)2(aq) → CaCO3(s) + KNO3(aq)
2K+(aq) + CO32-(aq) → K2CO3(aq)
K+(aq) + NO3-(aq) → KNO3(aq)
Ca2+(aq) + 2NO3-(aq) → Ca(NO3)2(aq)
Ca2+(aq) + CO32-(aq) → CaCO3(s)
According to this balanced equation, how many moles of Cu(NO3)2 are produced when 12 mol of Al are produced?
3Cu(s) + 2Al(NO3)3(aq) → 2Al(s) + 3Cu(NO3)2(aq)
24
36
18
60
In the laboratory, you made solutions using 153 g of AlCl3 and 145 g of NaOH to perform the reaction. You produced 67.3 g of aluminum hydroxide. If the theoretical yield of this reaction is 84.3 g, what was your percent yield?
AlCl3(aq) + 3NaOH(aq) → Al(OH)3(s) + 3NaCl(aq)
79.8 %
54.2 %
94.7%
1.25 %
How many grams of solute would you need to make 400 mL of 0.75 M FeCl3 solution?
0.3 grams
48.6
162
303
How many liters are in 450 mL?
45
4.50
45000
0.45
What is the molar mass of CaCl2?
58.5 g/mol
111 g/mol
71.5 g/mol
54 g/mol
If you dissolve 33.6 grams of KOH in water so that the total volume of the solution is 1.50 L, what is the molarity of the solution?
0.4 M
22.4 M
0.6 M
0.9 M
A solution of LiOH is mixed with a solution of Mg(NO3)2. The result is a solid magnesium hydroxide precipitate. What is the correct balanced chemical equation for this reaction.
LiOH + Mg(NO3)2 --> MgOH + Li(NO3)2
MgOH + Li(NO3)2 --> LiOH + Mg(NO3)2
2LiOH + Mg(NO3)2 --> Mg(OH)2 + 2LiNO3
2LiOH + Mg(NO3)2 --> MgLi2 + 2OH(NO3)
If you have 14.0 g N2 and 8.0 g H2 for the reaction shown below, what is the limiting reactant?
N2(g) + 3H2(g) → 2NH3(g)
N2
H2
NH3
no limiting reactant
When 23.5 g of benzene, C6H6(l), reacts with 35.6 g of chlorine gas, Cl2(g) in the following equation C6H6(l) + Cl2(g) --> C6H5Cl(l) + HCl(g)
What is the limiting reactant?
What is the theoretical yield of chlorobenzene, C6H5Cl(l)?
C6H6(l), 23.5 grams
C6H6(l), 33.8 grams
Cl2(g), 56.4 grams
Cl2(g), 35.6 grams
What is the mole ratio between CaCl2 and NaNO3 in the following chemical equation?
CaCl2 + 2NaNO3 --> Ca(NO3)2 + 2NaCl
1:2
1:1
2:2
2:1
