Chem 051 - Fundamentals of Chemistry » Winter 2021 » Homework GOB Week 4
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Chem 051 - Fundamentals of Chemistry ] course for $25 USD.
Existing Quiz Clients Login here
Question #1
The mass percent concentration refers to
A.
grams of solute in 100 g of solution.
B.
grams of solute in 1 kg of solvent.
C.
grams of solute in 100 g of solvent.
D.
grams of solvent in 100 g of solution.
E.
grams of solute in 1 kg of solution.
Question #2
In a solution, the solvent
A.
is a liquid.
B.
can be a solid, liquid, or gas.
C.
is never a solid.
D.
can be a liquid or gas.
E.
is the substance present in the smallest concentration.
Question #3
The molarity (M) of a solution refers to
A.
grams of solute/L of solution.
B.
grams of solute/100 mL of solution.
C.
moles of solute/L of solution.
D.
moles of solute/ L of solvent.
E.
moles of solute/100 mL of solution.
Question #4
What is the molarity of a solution which contains 58.5 g of sodium chloride dissolved in 0.500 L of solution?
A.
0.500 M
B.
2.00 M
C.
1.50 M
D.
1.00 M
E.
4.00 M
Question #5
What volume of 0.10 M NaOH can be prepared from 250. mL of 0.30 M NaOH?
A.
0.75 L
B.
0.25 L
C.
0.075 L
D.
0.083 L
E.
750 L
Question #6
What mass of KCl is in 350 mL of 0.24 M KCl?
A.
0.84 g
B.
18 g
C.
84 g
D.
6.3 g
E.
1.1.g
Question #7
In water, a substance that ionizes completely in solution is called a
A.
weak electrolyte.
B.
nonelectrolyte.
C.
strong electrolyte.
D.
semiconductor.
E.
nonconductor.
Question #8
For Kw, the product of [H3O+] and [OH-] is
A.
1.0 X 10-14
B.
1.0
C.
1.0 X 1014
D.
1.0 X 10-1
E.
1.0 X 10-7
Question #9
What is the [H3O+] in a solution with [OH-] = 1 x 10-12 M?
A.
1 x 102 M
B.
1 x 10-8 M
C.
1 x 10-2 M
D.
1 x 10-7 M
E.
1 x 10-12 M
Question #10
What is the [OH-] in a solution that has a [H3O+] = 1 x 10-6 M?
A.
1 x 10-12 M
B.
1 x 10-8 M
C.
1 x 10-2 M
D.
1 x 10-10 M
E.
1 x 10-6 M
Question #11
What is the pH of a solution with [OH-] = 1 x 10-4 M?
A.
1.0 x 10-10
B.
-10.0
C.
-4.0
D.
4.0
E.
10.0
Question #12
The [H3O+] of a solution with pH = 2.0 is
A.
-10 M.
B.
1 x 102 M.
C.
10 M.
D.
1 x 10-2 M.
E.
1 x 10-12 M.
Question #13
The [H3O+] of a solution with pH = 8.7 is
A.
8.7 x 10-1 M.
B.
8.7 M.
C.
5 x 10-6 M.
D.
2 x 10-9 M.
E.
5.3 M.
Question #14
Which of the following is the strongest acid?
A.
NH4+
B.
HCl
C.
NaOH
D.
H2CO3
E.
H3PO4
Question #15
The name given to an aqueous solution of HBr is
A.
hypobromous acid.
B.
bromic acid.
C.
hydrobromic acid.
D.
bromous acid.
E.
hydrogen bromide.
Question #16
A solution with [ OH-] of 5 x 10-3 has a pH of ________.
A.
11.7
B.
7.0
C.
-2.3
D.
5.0
E.
2.3
Question #17
Ammonium hydroxide is a weak base because
A.
it is only slightly soluble in water.
B.
it is a dilute solution.
C.
it dissociates only slightly in water.
D.
is a poor acceptor of protons.
E.
it is completely ionized in aqueous solution.
Question #18
An acid and base react to form a salt and water in a(n) ________ reaction.
A.
ionization
B.
reduction
C.
dissociation
D.
neutralization
E.
oxidation
Question #19
In a neutralization reaction
A.
water and a salt react to form an acid and a base.
B.
an acid and a salt react to form water and a base.
C.
a base and a salt react to form water and an acid.
D.
two acids react to form water.
E.
an acid and a base react to form a salt and water.
Question #20
Which of the following is the correctly balanced equation for the complete neutralization of H3PO4 by Ca(OH)2?
A.
H3PO4 + Ca(OH)2 → Ca3(PO4)2 + H2O
B.
4H3PO4 + 6Ca(OH)2 → 2Ca3(PO4)2 + 12H2O
C.
2H3PO4 + 3Ca(OH)2 → Ca3(PO4)2 + 6H2O
D.
H3PO4 + Ca(OH)2 → CaHPO4 + 2H2O
E.
3H3PO4 + Ca(OH)2 → Ca3(PO4)2 + 5H2O
Question #21
The neutralization reaction between Al(OH)3 and HNO3 produces the salt with the formula
A.
Al(NO3)3.
B.
NO3OH.
C.
AlNO3.
D.
H2O.
Question #22
Which of the following is a neutralization reaction?
A.
KCl + NaNO3 → KNO3 + NaCl
B.
2NO2 → 2NO + O2
C.
H2O + SO3 → H2SO4
D.
HNO3 + KOH → H2O + KNO3
Question #23
25.0 mL of 0.212 M NaOH is neutralized by 13.6 mL of an HCl solution. The molarity of the HCl solution is
A.
0.390 M.
B.
0.500 M.
C.
0.212 M.
D.
0.137 M.
E.
0.115 M.
Question #24
According to the Bronsted-Lowry definition,
A.
a base produces H+ ions in aqueous solutions.
B.
a base is a proton donor.
C.
an acid is a proton acceptor.
D.
an acid acts as the solvent.
E.
a base is a proton acceptor.
Question #25
If the carbon dioxide level in the blood is too high, more carbonic acid is produced, and this results in the condition termed acidosis.
A.
FALSE
B.
TRUE
Question #26
An acidic solution has a pH less than 7.0.
A.
FALSE
B.
TRUE
Question #27
A solution with a pH greater than 7 is basic.
A.
TRUE
B.
FALSE
Question #28
In any water solution, [H3O+] [OH-] = 1.0 x 10-7.
A.
FALSE
B.
TRUE
Question #29
An aqueous solution with [OH-] = 1.0 x 10-12 has a pH of 12.0.
A.
FALSE
B.
TRUE
Question #30
For many reactions of acids with bases, the resulting products are a salt and water.
A.
TRUE
B.
FALSE
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Chem 051 - Fundamentals of Chemistry ] course for $25 USD.
Existing Quiz Clients Login here