
PLQ -Redox Titration
Quiz
•
Specialty
•
9th Grade
•
Practice Problem
•
Medium
Jose Louie Dagohoy
Used 3+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What substance is used to standardize the KMnO₄ solution?
H₂O₂
Sodium oxalate
6N H2SO4
0.100 N KMnO₄
Agua oxenada solution
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What color change indicates the endpoint in KMnO₄ titration?
Brown to pink
Disappearance of pink
Colorless to green
Permanent faint pink
Yellow to colorless
Answer explanation
The endpoint is marked by the first faint pink color that persists.
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is not required in the standardization procedure?
H₂SO₄
KMnO₄ solution
H₂O₂
Na₂C₂O₄
Distilled water
Answer explanation
H₂O₂ is used later for unknown analysis, not in standardization.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following should not be done during KMnO₄ preparation?
Stir the solution
Boil the solution
Use pre-boiled distilled water
Store in a dark place
Dissolve 3.2 g KMnO₄ in hot water
Answer explanation
Boiling accelerates KMnO₄ decomposition.
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the ideal temperature of the oxalate solution before titration?
Room temperature
~60°C
~85°C
Boiling point
0°C
Answer explanation
Heating to ~85°C ensures a faster and complete reaction.
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What equipment is used to deliver KMnO₄ solution during titration?
Acid burette
Base burette
Erlenmeyer flask
Pipette
Glass Cylinder
Answer explanation
An acid burette is suitable for strongly colored and oxidizing titrants like KMnO₄.
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is used to clean the burette before filling with KMnO₄?
Ethanol
Liquid Detergent
KMnO₄ solution
Distilled Water
NaOH
Answer explanation
Burette should be rinsed with KMnO₄ solution to avoid dilution errors.
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