Chemistry Reference
In-Depth Information
3.
In a laboratory experiment, a student neutralizes 25 ml of NaOH with
an unknown concentration by reacting it with 25 ml of a standard 2.0 M
H
2
SO
4
solution. What is the molarity of the base?
4.
A student carries out an acid-base titration in the laboratory, and finds
that it takes 1.0 L of a standard 4.0 M HCl solution to neutralize 3.0 L
of a Ca(OH)
2
solution with an unknown concentration. Determine the
molarity of the base.
Chapter 9 Examination
Part I—Matching
Match the following terms to the definitions that follow. Not all of the
terms will be used.
a. neutralization
b. amphoteric
c. indicator
d. Brønsted-Lowry acid
e. Brønsted-Lowry base
f. Lewis base
g. Lewis acid
h. Arrhenius base
i. Arrhenius acid
j. hydroxide ion
k. hydronium ion
l. titration
m.conjugate acid-base pair
n. conjugate base
o. conjugate acid
1.
A(n) _______________ is a substance that donates a proton to
another substance.
2.
A(n) _______________ donates a pair of electrons to form a covalent
bond.
3.
A(n) _______________ releases hydroxide ions in an aqueous
solution.
4.
A(n) _______________ is an organic substance that changes color at
certain pH values.
5.
A(n) _______________ is the substance that is left after an acid loses
a proton.
Part II—Multiple Choice
For each of the following questions, select the best answer.
6.
When the H
3
O
+
ion concentration of a solution is greater than the
OH
-
ion concentration, the solution is said to be __________.
a) acidic
b) basic
c) amphoteric
d) Arrhenius
