Chemistry 51 - Fundamentals of Chemistry » Fall 2021 » Chapter 10 Homework
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Question #1
If a base is 100% ionized when dissolved in water, it is considered a(n) _______ base.
A.
strong
B.
weak
Question #2
Which of the following statements is true regarding the Brønsted-Lowry acids and bases?
A.
All Brønsted-Lowry acids and bases are Arrhenius acids and bases.
B.
A Brønsted-Lowry base is a compound that accepts a peroxide ion in a reaction.
C.
A Brønsted-Lowry acid is a compound that supplies a hydrogen ion in a reaction.
D.
A Brønsted-Lowry base is a compound that supplies an amide ion in a reaction.
E.
A Brønsted-Lowry acid is a compound that accepts a hydronium ion in a reaction.
Question #3
Consider the following reaction: H2O(ℓ) + NO2–(aq) → HNO2(aq) + OH–(aq) In this reaction water acts as a Brønsted-Lowry acid.
A.
TRUE
B.
FALSE
Question #4
Which of the following compounds can be combined with Na3PO4 to make a buffer solution?
A.
NaCl
B.
H3PO4
C.
HCl
D.
Mg(OH)2
E.
HClO4
Question #5
HNO2 is the chemical formula for _____.
A.
potassium hydroxide
B.
magnesium hydroxide
C.
nitrous acid
D.
ammonia
E.
chlorous acid
Question #6
One of the buffers in human blood is based in part on what ion?
A.
acetate
B.
chloride
C.
bicarbonate
D.
nitrate
E.
sulfite
Question #7
Which of the following combinations of compounds can make a buffer solution?
A.
HBr and Mg(NO3)2
B.
NaOH and CaCl2
C.
NH3 and NH4Cl
D.
KOH and H2SO4
E.
HC2H3O2 and NH3
Question #8
Which of the following products are generated during the following chemical reaction? NH3(aq) + H2O(ℓ) → _____(aq) + _____(aq)
A.
NH2–; H3O+
B.
NO3–; H+
C.
NO2–; NH4+
D.
NH2–; O2–
E.
NH4+; OH–
Question #9
The name of the acid that has the formula H2Se is _______ acid.
A.
Hydroseleric
B.
Hydroselenic
C.
Hydroselenium
Question #10
Identify the reactant in the following chemical reaction. _____(aq) + H2O(ℓ) ⇌ NO2–(aq) + H3O+(aq)
A.
HNO2
B.
NaOH
C.
NH3
D.
C8H10N4O2
E.
C6H5NH2
Question #11
Which of the following statements is true about pH values?
A.
The pH value of blood is 0.7.
B.
The pH value of 1 M NaOH is 14.
C.
The pH value of pure water is 5.
D.
The pH value of lime juice is 11.
E.
The pH value of 1 M Ca(OH)2 is 2.
Question #12
Which of the following salts is formed in the neutralization reaction between H2SO4 and NaOH?
A.
NaHSO4
B.
NaS
C.
Na(SO4)2
D.
Na2SO4
E.
S2(NO3)2
Question #13
NH3 and (NH4)3PO4 would make a buffer solution.
A.
TRUE
B.
FALSE
Question #14
Acids change the color of litmus to _______.
A.
green
B.
red
Question #15
A pH below 7 indicates a basic solution.
A.
TRUE
B.
FALSE
Question #16
A Brønsted-Lowry acid is a compound that donates a hydrogen ion in a reaction.
A.
TRUE
B.
FALSE
Question #17
Which of the following reactions constitutes autoionization of water?
A.
H2O(ℓ) + H2O(ℓ) → H3O+(aq) + OH–(aq)
B.
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(ℓ)
C.
NH3(aq) + H2O(ℓ) → NH4+(aq) + OH–(aq)
D.
H2O(ℓ) + NH2–(aq) → OH–(aq) + NH3(aq)
E.
HCl + H2O(ℓ) → H3O+(aq) + Cl–(aq)
Question #18
Arrhenius defined a base as a compound that increases the concentration of hydride ions in a solution.
A.
TRUE
B.
FALSE
Question #19
Which of the following is an Arrhenius acid?
A.
NaH
B.
KOH
C.
NaNH2
D.
H3PO4
E.
Ba(OH)2
Question #20
The name of the base Ca(OH)2 is _______.
A.
Calcium oxide
B.
Calcium dioxide
C.
Calcium hydroxide
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