WorksheetsCHEM 101 Test 3 Review- Ch. 10 & 11
Total questions: 28
Worksheet time: 26mins
Which of the following is an Arrhenius acid?
H2SO4
HCl
HNO3
All of the above
Given a pH of 2, what's the corresponding pOH?
(a)
Which of the following is a weak base?
LiOH
Zn(OH)2
KOH
Ca(OH)2
In the following reaction, which reactant is a Brønsted-Lowry base? HCl(aq) + KHS(aq) → KCl(aq) + H2S(aq)
HCl
KHS
KCl
H2S
Any weak acid or weak base is considered to be a weak electrolyte.
True
False
Given an aqueous solution in which the [H+] = 5.0 x 10-3 M, what is the hydroxide ion concentration?
[OH-] = 5.0 x 10-12 M
[OH-] = 2.0 x 10-10 M
[OH-] = 2.0 x 10-12 M
[OH-] = 5.0 x 10-11 M
What is the pH for a solution with [H3O+] = 0.000001 M?
(Answer should be a whole number with one number after the decimal place; ex: 9.0)
(a)
What is the simplest term for the product of a neutralization reaction in addition to water?
Nonelectrolyte
Buffer
Spectator
Salt
The definition of an Arrhenius acid and a Bronsted-Lowry acid are essentially the same.
True
False
Given a pOH of 6, what would this solution be considered?
Slightly basic
Very basic
Slightly acidic
Neutral
How much more acidic is a pH 3 solution compared to a pH 8 solution?
50 times more acidic
5 times more acidic
105 times more acidic
N/A since pH 8 is basic
If 0.001 moles of HBr are added to H2O to make 2 liters of solution, what's the pH of the solution? (Answer to 2 sig-figs)
(a)
A "strong acid" or a "weak acid" refers to an acid's concentration.
True
False
In the following reaction, which reactant is a Brønsted-Lowry acid? H2CO3(aq) + Na2HPO4(aq) → NaHCO3(aq) + NaH2PO4(aq)
H2CO3
Na2HPO4
NaHCO3
NaH2PO4
What is the pH for a solution with [OH-] = 0.12 M?
0.92
13.08
13
1
Given the following equilibrium reaction, H2(g) + I2(g) ⇌ 2HI (g), which way would the system have to shift if more iodine was added?
Left
Right
Up
Down
Given the equilibrium reaction H2(g) + CO2(g) ⇌ H2O(g) + CO(g), which of the reaction rates would have to increase if carbon dioxide was removed from the system?
The reverse reaction rate (system shifts left)
The forward reaction rate (system shifts right)
Both?
Neither; the equilibrium is not disturbed
Which of the following pairs in solution together would constitute a buffer? Check all that apply.
HI and KI
HNO2 and NaNO2
HC2H3O2 and NaC2H3O2
NaBr and HBr
HF and NaCl
Given the equilibrium reaction NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH-(aq), in relation to NH3 (ammonia), what role does NH4+ (ammonium) play?
Buffer partner
Conjugate base
Conjugate acid
Secret identity
Given the equilibrium reaction NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH-(aq), what role does water play?
Base
Acid
Indicator
Solute
What do we call the moment/concept when there is an equal amount of acid and base in a titration (when you hit the correct color from the indicator)?
(a)
What is the molarity of an HCl solution... if 20.5 mL of 0.211 M NaOH is required to neutralize 0.0250 L of HCl?
HCl + NaOH ⇌ H2O + NaCl
0.00433 M
0.0250 M
0.173 M
17.3 M
1.73 x 10^-4 M
Saturated hydrocarbons contain which of the following? Select all that apply.
Hydrogen atoms
Oxygen atoms
Carbon atoms
Double bonds
Single bonds
What is the name of this structure?
(a)
Choose the skeletal structure of octane.
Name this molecule
bromooctane
4-bromo-3,5-dimethylhexane
3-bromo-2-methyl-4-methylhexane
3-bromo-2,4-dimethylhexane
2,4-dimethyl-3-bromohexane
Name this molecule.
1,3-dimethylcyclohexane
1,3-dimethylhexane
1,3-diiodobenzene
1,3-diiodocyclohexane
1,3-diethylbenzene
What is the full name of this molecule?
(Hint: Something goes before the numbers, based on specific substituent arrangement.)
(a)
