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ACID BASE TITRATION MCQs

Total Questions : 21 | Page 2 of 3 pages
Question 11. What color is phenolphthalein in a base?
  1.    colorless
  2.    pink
  3.    blue
  4.    green
 Discuss Question
Answer: Option B. -> pink
Question 12. Which of the following would be the strongest acid
  1.    NaOH
  2.    HF
  3.    H2SO4
  4.    Ca(OH)2
 Discuss Question
Answer: Option C. -> H2SO4
Question 13. Which pH is considered neutral?
  1.    1
  2.    3
  3.    7
  4.    14
 Discuss Question
Answer: Option C. -> 7
Question 14. What is the purpose of indicator solutions?
  1.    To signal the end of a reaction
  2.    To colour the solution
  3.    To complete the reaction
  4.    To equivalent the reaction
 Discuss Question
Answer: Option A. -> To signal the end of a reaction
Question 15. The name of the apparatus used for holding the titrant is__________
  1.    Conical flask
  2.    Burette
  3.    Pipette
  4.    Volumetric flask
 Discuss Question
Answer: Option B. -> Burette
Question 16. What is the main purpose of acid-base titrations?
  1.    To test if reactants react.
  2.    To calculate the concentration of unknown analyte.
  3.    To calculate the concentration of known analyte.
  4.    To test quality of reactants.
 Discuss Question
Answer: Option B. -> To calculate the concentration of unknown analyte.
Question 17. Ascorbic acid, H2C6H6O6(s), is a diprotic acid with K1 = 7
  1.    H3O+(aq)
  2.    H2C6H6O6(aq)
  3.    HC6H6O6-(aq)
  4.    C6H6O62-(aq)
 Discuss Question
Answer: Option D. -> C6H6O62-(aq)
Question 18. What is the role of an indicator in a reaction?
  1.    To help reactants react successfully.
  2.    To bind to the analyte to form a products.
  3.    To show when the reaction has reached or past the equivalence point.
  4.    To provide a surface for the reaction to occur.
 Discuss Question
Answer: Option C. -> To show when the reaction has reached or past the equivalence point.
Question 19. A student used a 0
  1.    1.82 moles
  2.    1.82 x 10-3 moles
  3.    8.34 x 10-3 moles
  4.    8.6 moles
 Discuss Question
Answer: Option B. -> 1.82 x 10-3 moles
Question 20. What term describes the change in color of the indicator during a titration?
  1.    colorizing
  2.    endpoint
  3.    equivalence point
  4.    endgame
 Discuss Question
Answer: Option B. -> endpoint

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