Nelson Chemistry Chapter 15 Quiz
Click on the correct answer
1
What is a characteristic of an Ahhrenius acid?
it reacts with water to form hydrogen ions.
it turns red litmus blue
it turns phenolphthalein solution red
It reacts with water to form hydroxide ions
2
What is the Bronsted-Lowry definition of an acid?
electron acceptor
electron donor
proton acceptor
proton donor
3
Which of the substances below are acids according to the Bronsted-Lowry theory of acids and bases?
HCO
3
-
(aq) + HS
-
(aq) <------> CO
3
2-
(aq) + H
2
S(aq)
HCO
3
-
(aq) and CO
3
-2
(aq)
HS
-
(aq) and CO
3
-2
(aq)
HCO
3
-
(aq) and H
2
S(aq)
HS
-
(aq) and H
2
S(aq)
4
Phenolphthalein is put into a solution containing 0.20 mol of HCl(aq). If an equal amount of 0.18 mol of NaOH(aq) is then added, the solution should be predicted to be
colorless and acidic
pink and acidic
colorless and basic
pink and basic
5
10 mL of 0.10 mol/L HCl(aq) requires 35 mL of NaOH(aq) for complete neutralization. The concentration of the NaOH(aq) is
0.020 mol/L
0.029 mol/L
0.035 mol/L
0.058 mol/L
6
For the equilibrium:
HSO
4
-
+ HPO
4
2-
<-----> SO
4
2-
+ H
2
PO
4
-
a conjugate Bronsted-Lowry acid-base pair is
HSO
4
-
(base) and SO
4
2-
(acid)
HSO
4
-
(acid) and SO
4
2-
(base)
HPO
4
2-
(base) and HSO
4
-
(acid)
HPO
4
2-
(acid) and H
2
PO
4
-
(base)
7
A solution has a pH of 6.5 and contains a few drops of phenolphthalein, methyl red and thymol blue. The solution appears
green
yellow
orange
colorless
8
The equivalence point in an acid-base titration will have a pH of 7 for the titration of
OH
-
with water
ammonia with H
3
O
+
(aq)
acetic acid with potassium hydroxide
hydrochloric acid with potassium hydroxide
9
The pH at the equivalence point of an acid-base titration is 3.8. This result would be consistent with the titration of a
strong acid with a strong base
strong acid with a weak base
weak acid with a strong base
weak acid with a weak base
10
A 20.0 mL sample of 0.300 mol/L NaOH(aq) is required to react completely with 30.0 mL of HNO
2
(aq). What was the concentration of the nitrous acid?
2.56 mol/L
1.56 mol/L
0.450 mol/L
0.200 mol/L