Questions on Neutralization Reactions
Multiple-Choice Questions: Neutralization Reactions
1. What is the product of a neutralization reaction between an acid and a base?
A) Water and salt
B) Water and hydrogen gas
C) Salt and carbon dioxide
D) Water and oxygen gas
E) Hydrogen gas and salt
2. When hydrochloric acid reacts with sodium hydroxide, the products formed are:
A) NaCl and H2
B) NaCl and H2O
C) NaOH and HCl
D) Na2O and H2O
E) NaCl and CO2
3. Which of the following represents a neutralization reaction?
A) H2 + O2 → H2O
B) HCl + NaOH → NaCl + H2O
C) Na + Cl2 → NaCl
D) CO2 + H2O → H2CO3
E) CaCO3 → CaO + CO2
4. During neutralization, the pH of the resulting solution is typically:
A) Exactly 7
B) Always less than 7
C) Always greater than 7
D) Around 7, but can be slightly acidic or basic
E) Always 14
5. Which indicator would be most suitable to detect the endpoint of a strong acid-strong base titration?
A) Methyl orange
B) Phenolphthalein
C) Bromothymol blue
D) Both B and C
E) Litmus paper only
6. What happens to the concentration of H+ ions during neutralization?
A) It increases
B) It decreases
C) It remains constant
D) It doubles
E) It becomes zero
7. What is the general formula for a neutralization reaction?
A) Acid + Base → Salt + Water
B) Acid + Metal → Salt + Hydrogen
C) Base + Water → Salt + Acid
D) Acid + Salt → Base + Water
E) Salt + Water → Acid + Base
8. Which of the following pairs will undergo neutralization?
A) NaCl and H2O
B) H2SO4 and KOH
C) HCl and NH3
D) NaOH and NaCl
E) HNO3 and CO2
9. Which of the following salts is formed by the neutralization of sulfuric acid and sodium hydroxide?
A) NaCl
B) Na2SO4
C) NaHCO3
D) NaNO3
E) K2SO4
10. What is the role of water in a neutralization reaction?
A) It is a reactant
B) It is a catalyst
C) It is a product
D) It is an acid
E) It is a base
11. What type of reaction is neutralization?
A) Redox reaction
B) Double displacement reaction
C) Decomposition reaction
D) Combination reaction
E) Combustion reaction
12. During titration, neutralization is used to:
A) Measure the concentration of an acid or base
B) Change the color of the solution
C) Produce gases
D) Create salts only
E) Remove impurities
13. Which gas is commonly produced during the neutralization of an acid with a carbonate?
A) Oxygen
B) Hydrogen
C) Carbon dioxide
D) Nitrogen
E) Chlorine
14. Which of the following is NOT true about neutralization?
A) It always produces water
B) It involves reaction between H+ and OH- ions
C) It can involve weak acids and weak bases
D) It always results in a pH of exactly 7
E) Salt is one of the products
15. If 25 mL of 0.1 M HCl is neutralized by NaOH, how many moles of NaOH are required?
A) 0.0025 moles
B) 0.025 moles
C) 0.01 moles
D) 0.00025 moles
E) 0.25 moles
16. The neutralization reaction between a strong acid and a weak base typically results in:
A) A neutral solution
B) A basic solution
C) An acidic solution
D) No reaction
E) A precipitate
17. Which salt is formed when ammonia reacts with hydrochloric acid?
A) Ammonium nitrate
B) Ammonium chloride
C) Sodium chloride
D) Potassium chloride
E) Ammonium sulfate
18. What is the pH of a neutral solution at 25°C?
A) 0
B) 7
C) 14
D) 1
E) 10
19. In the neutralization reaction H2SO4 + 2NaOH → Na2SO4 + 2H2O, what is the molar ratio of NaOH to H2SO4?
A) 1:1
B) 2:1
C) 1:2
D) 3:1
E) 1:3
20. Which of the following is a strong acid-strong base neutralization?
A) CH3COOH + NaOH
B) HCl + NaOH
C) HF + NH3
D) H2SO4 + NH3
E) HNO2 + KOH
- Questions on pH and Calculating pH
- Questions on pOH Scale and Calculations
- Questions on Strong and Weak Acids and Acid Ionization Constant (Ka) and Base (Kb)
Answers
1. A) Water and salt
2. B) NaCl and H2O
3. B) HCl + NaOH → NaCl + H2O
4. D) Around 7, but can be slightly acidic or basic
5. D) Both B and C
6. B) It decreases
7. A) Acid + Base → Salt + Water
8. B) H2SO4 and KOH
9. B) Na2SO4
10. C) It is a product
11. B) Double displacement reaction
12. A) Measure the concentration of an acid or base
13. C) Carbon dioxide
14. D) It always results in a pH of exactly 7
15. A) 0.0025 moles
16. C) An acidic solution
17. B) Ammonium chloride
18. B) 7
19. B) 2:1
20. B) HCl + NaOH
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