Chem 121 Final Questions with Correct Answers
Arrhenius defined base as a substance whose aqueous
solution contains an excess of
a. chloride ion.
b. hydrogen ion.
c. hydroxide ion.
d. sodium ion.✔✔C
Brønsted and Lowry defined an acid as a(n)
a. proton acceptor.
b. proton donor.
c. electron donor.
d. electron acceptor.✔✔B
Which of the following is one of the conjugate acid
base pairs in the following equation?
H2SO4 + H2O → HSO4
- + H3O+
a. H2SO4 and HSO4
-
b. H2SO4 and H2O
c. HSO4
- and H3O+
d. H3O+ and H2SO4✔✔A
,The concentration of an aqueous solution of iron(II)
chloride (FeCl2) is 0.0550 M. What is the molarity of
each ion in this solution?
FeCl2(s) ⟶ Fe2+(aq) + 2Cl-(aq)
0.0550 M 0.0550M + 0.110M
a. 0.0550 M for both the iron(II) and chloride ions.
b. 0.0550 M for the iron(II) ion and 0.110 M for the
chloride ion.
c. 0.110 M for the iron(II) ion and 0.0550 M for the
chloride ion.
d. not enough information is given to determine each
molarity.✔✔B
Which of the following is a strong base?
a. HCl
b. NH3
c. KOH
d. CH3OH✔✔C
In an acidic solution the
a. concentration of hydronium ion and hydroxide ion are
equal.
b. concentration of hydronium ion is greater than that of
hydroxide ion.
c. concentration of hydroxide ion greater than that of
, hydronium ion.✔✔B
What is the pH of a 0.034 M hydrochloric acid solution?
a. -2.00
b. 3.40
c. -1.47
d. 1.47✔✔D
What is the concentration of an HCl solution if 12.1 mL
of the solution is neutralized by 11.0 mL of a 0.31 M
NaOH solution?
a. 0.75 M
b. 0.28 M
c. 0.40 M
d. 0.34 M✔✔B
What are the spectator ions when hydrochloric acid
(HCl) reacts with sodium hydroxide (NaOH)?
a. H + and OH -
b. Na + and Cl -
c. Na + and H +
d. Cl - and OH -✔✔B
In which direction will the equilibrium shift when
volume is decreased in the following equilibrium?
2 NO (g) + O2 (g) 2 NO2 (g)
Arrhenius defined base as a substance whose aqueous
solution contains an excess of
a. chloride ion.
b. hydrogen ion.
c. hydroxide ion.
d. sodium ion.✔✔C
Brønsted and Lowry defined an acid as a(n)
a. proton acceptor.
b. proton donor.
c. electron donor.
d. electron acceptor.✔✔B
Which of the following is one of the conjugate acid
base pairs in the following equation?
H2SO4 + H2O → HSO4
- + H3O+
a. H2SO4 and HSO4
-
b. H2SO4 and H2O
c. HSO4
- and H3O+
d. H3O+ and H2SO4✔✔A
,The concentration of an aqueous solution of iron(II)
chloride (FeCl2) is 0.0550 M. What is the molarity of
each ion in this solution?
FeCl2(s) ⟶ Fe2+(aq) + 2Cl-(aq)
0.0550 M 0.0550M + 0.110M
a. 0.0550 M for both the iron(II) and chloride ions.
b. 0.0550 M for the iron(II) ion and 0.110 M for the
chloride ion.
c. 0.110 M for the iron(II) ion and 0.0550 M for the
chloride ion.
d. not enough information is given to determine each
molarity.✔✔B
Which of the following is a strong base?
a. HCl
b. NH3
c. KOH
d. CH3OH✔✔C
In an acidic solution the
a. concentration of hydronium ion and hydroxide ion are
equal.
b. concentration of hydronium ion is greater than that of
hydroxide ion.
c. concentration of hydroxide ion greater than that of
, hydronium ion.✔✔B
What is the pH of a 0.034 M hydrochloric acid solution?
a. -2.00
b. 3.40
c. -1.47
d. 1.47✔✔D
What is the concentration of an HCl solution if 12.1 mL
of the solution is neutralized by 11.0 mL of a 0.31 M
NaOH solution?
a. 0.75 M
b. 0.28 M
c. 0.40 M
d. 0.34 M✔✔B
What are the spectator ions when hydrochloric acid
(HCl) reacts with sodium hydroxide (NaOH)?
a. H + and OH -
b. Na + and Cl -
c. Na + and H +
d. Cl - and OH -✔✔B
In which direction will the equilibrium shift when
volume is decreased in the following equilibrium?
2 NO (g) + O2 (g) 2 NO2 (g)
