CHEM134 C001 Digital Acid–Base Chemistry (Beyond
Labz) 2026 – Fully Solved Quiz 1 | Verified Questions &
Answers, Step-by-Step Solutions | American Public
University | A+ Rated Study Guide
1. A CHEM134 C003: Digital Acid-Base Chemistry Final Exam
Spring 2024
Instructor:
Total Points: 200 | Time Limit: 3 hours
Instructions: Please read each question carefully. Answers for the multiple choice
and true/false sections should be marked on your Scantron sheet. For short answer,
calculation, and lab data analysis questions, show all your work clearly in the exam
booklet to receive full credit. You may use a non-programmable calculator.
Section I: Multiple Choice (60 Questions @ 2 points each = 120 points)
Instructions: Select the best answer for each question.
Topics: Foundational Concepts & Definitions
1. According to the Brønsted-Lowry definition, an acid is a substance that:
a) Accepts a proton
b) Donates a proton
c) Donates a pair of electrons
d) Increases the concentration of OH⁻ ions in water
2. Which of the following is a property of a basic solution?
a) Turns blue litmus red
, b) Has a pH less than 7
c) Feels slippery to the touch
d) Reacts with metals to produce hydrogen gas
3. The conjugate base of H₂PO₄⁻ is:
a) H₃PO₄
b) HPO₄²⁻
c) PO₄³⁻
d) OH⁻
4. In the reaction NH₃(aq) + H₂O(l) ⇌ NH₄⁺(aq) + OH⁻(aq), the two Brønsted-
Lowry bases are:
a) NH₃ and H₂O
b) NH₃ and OH⁻
c) H₂O and NH₄⁺
d) NH₄⁺ and OH⁻
5. A substance that can act as both an acid and a base is called:
a) Conjugated
b) Diprotic
c) Amphiprotic
d) Isoelectric
6. As an acidic solution is diluted with water, the:
a) pH increases
b) pH decreases
c) concentration of H⁺ ions increases
d) solution becomes more concentrated
, 7. Which of the following oxides, when dissolved in water, would produce a
solution with a pH > 7?
a) SO₂
b) CO₂
c) CaO
d) P₄O₁₀
8. The strength of an acid is determined by its:
a) Concentration
b) pH
c) Ability to taste sour
d) Extent of ionization in water
9. At 25°C, the ion product constant for water, Kw, is:
a) 1.0 x 10⁻⁷
b) 1.0 x 10⁻¹⁴
c) 1.0 x 10⁷
d) 14
10.A solution with a pH of 8 has a [H⁺] that is:
a) 2 times greater than a pH of 6
b) 100 times greater than a pH of 6
c) 100 times less than a pH of 6
d) 2 times less than a pH of 6
Topics: Salt Hydrolysis and pH of Salt Solutions
11.A 0.1 M solution of NH₄Cl will be:
a) Acidic, because NH₄⁺ is the conjugate acid of a weak base
b) Basic, because Cl⁻ is the conjugate base of a strong acid
Labz) 2026 – Fully Solved Quiz 1 | Verified Questions &
Answers, Step-by-Step Solutions | American Public
University | A+ Rated Study Guide
1. A CHEM134 C003: Digital Acid-Base Chemistry Final Exam
Spring 2024
Instructor:
Total Points: 200 | Time Limit: 3 hours
Instructions: Please read each question carefully. Answers for the multiple choice
and true/false sections should be marked on your Scantron sheet. For short answer,
calculation, and lab data analysis questions, show all your work clearly in the exam
booklet to receive full credit. You may use a non-programmable calculator.
Section I: Multiple Choice (60 Questions @ 2 points each = 120 points)
Instructions: Select the best answer for each question.
Topics: Foundational Concepts & Definitions
1. According to the Brønsted-Lowry definition, an acid is a substance that:
a) Accepts a proton
b) Donates a proton
c) Donates a pair of electrons
d) Increases the concentration of OH⁻ ions in water
2. Which of the following is a property of a basic solution?
a) Turns blue litmus red
, b) Has a pH less than 7
c) Feels slippery to the touch
d) Reacts with metals to produce hydrogen gas
3. The conjugate base of H₂PO₄⁻ is:
a) H₃PO₄
b) HPO₄²⁻
c) PO₄³⁻
d) OH⁻
4. In the reaction NH₃(aq) + H₂O(l) ⇌ NH₄⁺(aq) + OH⁻(aq), the two Brønsted-
Lowry bases are:
a) NH₃ and H₂O
b) NH₃ and OH⁻
c) H₂O and NH₄⁺
d) NH₄⁺ and OH⁻
5. A substance that can act as both an acid and a base is called:
a) Conjugated
b) Diprotic
c) Amphiprotic
d) Isoelectric
6. As an acidic solution is diluted with water, the:
a) pH increases
b) pH decreases
c) concentration of H⁺ ions increases
d) solution becomes more concentrated
, 7. Which of the following oxides, when dissolved in water, would produce a
solution with a pH > 7?
a) SO₂
b) CO₂
c) CaO
d) P₄O₁₀
8. The strength of an acid is determined by its:
a) Concentration
b) pH
c) Ability to taste sour
d) Extent of ionization in water
9. At 25°C, the ion product constant for water, Kw, is:
a) 1.0 x 10⁻⁷
b) 1.0 x 10⁻¹⁴
c) 1.0 x 10⁷
d) 14
10.A solution with a pH of 8 has a [H⁺] that is:
a) 2 times greater than a pH of 6
b) 100 times greater than a pH of 6
c) 100 times less than a pH of 6
d) 2 times less than a pH of 6
Topics: Salt Hydrolysis and pH of Salt Solutions
11.A 0.1 M solution of NH₄Cl will be:
a) Acidic, because NH₄⁺ is the conjugate acid of a weak base
b) Basic, because Cl⁻ is the conjugate base of a strong acid
