PLQ -Redox Titration

PLQ -Redox Titration

9th Grade

20 Qs

quiz-placeholder

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PLQ -Redox Titration

PLQ -Redox Titration

Assessment

Quiz

Specialty

9th Grade

Medium

Created by

Jose Louie Dagohoy

Used 3+ times

FREE Resource

20 questions

Show all answers

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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