Name:______________________________________ Date:_______________ Class period:____
UNIT: Acids, Bases & Solutions
Directions: Fill in the best answer for each of the following. Some choices may be able to be
used more than once, and some not at all. (2pts each)
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
Supersaturated
Decrease
Molarity
Concentrated
Increase
Immiscible
Dilute
Concentrated
Solid
Solubility
Unsaturated
L.
M.
N.
O.
P.
Q.
R.
S.
T.
U.
V.
Saturated
Less quickly
Moles
Solute
Solvent
Miscible
More quickly
Dilute
Rate
Gas
Sour
W.
X.
Y.
Z.
AA.
BB.
CC.
DD.
EE.
FF.
GG.
Basic
Sweet
Yellow
Hydrogen
Acidic
Hydroxide
Blue
Corrosion
Bitter
Red
Neutralization
1. ____ Pressure has no effect on the solubility of ___ solutes.
2. ____ The solubility of a ___ solute will increase with decreasing temperature.
3. ____ Bases will react with acids in a reaction called _____.
4. ____ A _____ taste is a property of an acid.
5. ____ Acids always contain the _____ ion.
6. ____ If the [H+] equal to 3.2x10-4M it is a _____ solution.
7. ____ Litmus paper turns _____ in the presence of an acid.
8. ____ If a solution has a pOH = 2.7, the solution is _____.
9. ____ If a soluble solute stops dissolving in a solution, then the solution must be ___
10. ____ Increasing pressure will result in an ____ in solubility of a gas.
11. ____ Powdered sugar will tend to dissolve ____ than a sugar cube.
12. ____ The ____ is the substance doing the dissolving.
13. ____ If polar and nonpolar substances are mixed together they are said to be ____.
14. ____ If a small amount of solute is dissolved in solution the solution would be called ___.
15. ____ A solution with more than the maximum amount of solute dissolved.
16. ____ The ____ is the amount of solute in moles that will dissolve per liter of solution.
17. ____ Describes liquids that are soluble in each other.
18. ____ Stirring increases the ____ at which a solute dissolves.
Answer the questions using the diagrams of the flasks below. The solubility of KCl in water is
34.0g in100g of water at 20°C. Write ALL appropriate answers on the lines.
A
B
C
20°C
56.0gKCl
100g H2O
20°C
56.0gKCl
200g H2O
20°C
0.12molKCl
100g H2O
a) Which flask is saturated? (2pts)
________
b) Which flask is unsaturated? (2pts)
________
c) For the flask(s) that was/were identified as saturated, how much KI would you expect
to see on the bottom? (3pts)
Directions: Show all of your work for each of the following problems.
1. What is the molarity of a solution that contains 2.21 moles of MgBr 2 in 2.93 L of solution?
(4pts)
2. Calculate the molarity of a solution, when 20.2g of potassium nitrate (KNO 3) is dissolved
in 250.0mL of water. (6pts)
3. What volume of a 1.63 M solution would contain 1.960 grams of Ca3(PO4)2. (6pts)
Directions: Name the following substances: (3pts total)
1. H3(AsO4)
_____________________________
2. Mg(OH)2
_____________________________
3. H(ClO4)
_____________________________
Directions: Write the formulas for the following substances: (3pts total)
1. strontium hydroxide
______________
2. dichromic acid
______________
3. hydrophosphoric acid
______________
Directions: For the following problems, show all work, include units, round answers to the
correct number of significant figures.
1. What is the pH in a solution with [H+] = 2.17 x 10-5M? (6 pts)
2. What is the pH in a solution with pOH = 10.56? (6 pts)
3. What is the pOH in a solution with [H+] = 3.48 x 10-3M? (6 pts)
a. Is this solution acidic or basic? (1 pt)
4. A 138 mL solution of H3(AsO4) is neutralized by 52.0 mL of a 0.30 M Ag(OH) solution.
What is the concentration of the H3(AsO4)? (5 pts)
5. A 0.698 L solution of hydrochloric acid is neutralized by a volume of magnesium
hydroxide that started at 2.0 mL, and ended at the amount in the illustration below.
Also, 0.500 L of the same magnesium hydroxide solution is neutralized by 0.359 L of
0.1 M nitric acid. What is the concentration of hydrochloric acid? (10 pts)