Quiz on Polymer Molecular Weight Determination

Quiz on Polymer Molecular Weight Determination

University

29 Qs

quiz-placeholder

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Quiz on Polymer Molecular Weight Determination

Quiz on Polymer Molecular Weight Determination

Assessment

Quiz

Chemistry

University

Hard

Created by

D20221103338 ALFIRAH BINTI AHMAD

Used 4+ times

FREE Resource

29 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary method for determining polymer molecular weight?

Osmotic pressure

Mass spectrometry

End-group analysis

Viscometry

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a secondary method for determining molecular weight?

Ultracentrifugation

Light scattering

End-group analysis

Gel permeation chromatography

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the limitation of end-group analysis?

Cannot measure molecular weight

Requires expensive apparatus

Limited to linear polymers

Only applicable to branched polymers

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the preferred range for measuring molecular weight using end-group analysis?

20,000 – 50,000 g/mol

1,000 – 5,000 g/mol

5,000 – 10,000 g/mol

10,000 – 20,000 g/mol

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is used to measure osmotic pressure?

Viscometry

Cryoscopy

Titration

Membrane osmometry

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the van’t Hoff equation used for?

Calculating boiling point elevation

Determining osmotic pressure

Measuring freezing point depression

Calculating vapor pressure lowering

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main error in osmotic pressure measurements?

High molecular weight species diffusing

Low molecular weight species diffusing

Inaccurate concentration measurements

Temperature fluctuations

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