Acid-Base Reaction

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⁻)