NEW
Font size
WorksheetsAcid-Base Reaction
Total questions: 20
Worksheet time: 10mins
1. Which of the following best describes an acid–base reaction?
a) Exchange of electrons between species
b) Exchange of hydrogen ions (H⁺) between species
c) Transfer of neutrons between species
d) Combination of metals and nonmetals
2. Which of the following is an example of a base?
a) Hydrochloric acid (HCl)
b) Sulfuric acid (H₂SO₄)
c) Sodium hydroxide (NaOH)
d) Carbonic acid (H₂CO₃)
3. When acids and bases react, they produce:
a) Water only
b) Hydrogen gas
c) Salts and water
d) Hydroxides only
4. Acids turn blue litmus paper:
a) Red
b) Blue
c) Green
d) Colorless
5. Bases turn red litmus paper:
a) Red
b) Blue
c) Green
d) Yellow
6. The term acid originates from the Latin word meaning:
a) Bitter
b) Salty
c) Sour
d) Sweet
7. According to Lavoisier, acids were thought to contain which element?
a) Hydrogen
b) Oxygen
c) Nitrogen
d) Carbon
8. Humphry Davy discovered that the essential element in acids is:
a) Oxygen
b) Hydrogen
c) Carbon
d) Chlorine
9. The definition of an acid by Justus von Liebig states that:
a) Acids contain oxygen
b) Acids contain hydrogen replaceable by a metal
c) Acids turn blue litmus red
d) Acids contain hydroxide ions
10. The Arrhenius definition states that acids produce ______ in solution.
a) Hydrogen ions (H⁺)
b) Hydroxide ions (OH⁻)
c) Sodium ions (Na⁺)
d) Chloride ions (Cl⁻)
11. According to the Arrhenius definition, bases produce:
a) H⁺ ions
b) OH⁻ ions
c) Cl⁻ ions
d) H₂ gas
12. The neutralization reaction between an acid and a base can be represented as:
a
a) H⁺ + OH⁻ → H₂O
b) H₂ + O₂ → H₂O
c) Na + Cl → NaCl
d) H⁺ + Cl⁻ → HCl
13. The Brønsted–Lowry definition states that an acid is:
a) A hydroxide donor
b) A proton acceptor
c) A proton donor
d) A hydroxide acceptor
14. According to Brønsted–Lowry, a base is defined as:
a) A proton donor
b) A proton acceptor
c) An electron donor
d) A proton acceptor
15. The pair of acid and base that differ by one proton is called a:
a) Conjugate acid–base pair
b) Neutral compound
c) Electrolytic pair
d) Oxidation pair
16. Which of the following statements about acid–base reactions is TRUE?
a) They are irreversible reactions.
b) They can reach equilibrium.
c) They only occur in solids.
d) They do not form salts.
.
17. The quantitative measure of acidity or alkalinity is related to:
a) Conductivity of the solution
b) Color of the acid
c) Density of the compound
d) Temperature of the reaction
18. In the Brønsted–Lowry theory, the term proton refers to:
a) A neutron
b) An electron
c) The nucleus of a hydrogen atom (H⁺)
d) A hydrogen molecule (H₂)
19. Which of the following is a conjugate base of H₂O?
a) OH⁻
b) H₃O⁺
c) H₂
d) O₂
20. Which acid–base theory introduced the idea that reactions could occur even without water as a solvent?
a) Arrhenius theory
b) Lavoisier theory
c) Brønsted–Lowry theory
d) Liebig theory
