The P Dispersity Index (PDI) of a polymer is ( M - w = weight average molecular mass and M - n = number average molecular mass)

The ratio between M - w a n d M - n

The product of M - n a n d M - w

The difference between M - w a n d M - n

The P Dispersity Index (PDI) of a polymer is ( M - w = weight average molecular mass and M - n = number average molecular mass)

The ratio between M - w a n d M - n

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The P Dispersity Index (PDI) of a polymer is ( ${\bar{M}}_{w} =$ weight average molecular mass and ${\bar{M}}_{n} =$ number average molecular mass)

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Important Questions on Polymers

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Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

A polymer sample is made up of

30 %

molecules of mass

20, 000, 40 %

30, 000

and the rest mass of

60, 000

. Its number average molecule mass is

HARD

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Which option is correct for synthetic polymer?

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Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

The polydispersity index of the polymer is always:

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Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

The Poly Dispersity Index

(PDI)

of a polymer is

1.5 .

If its number average molecular mass is

30, 000,

calculate its weight average molecular mass.

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Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

What is PDI (Poly Dispersity Index)?

HARD

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

In a polymer sample, the molecular weight of

20

molecules is

20, 000

, molecular weight of

40

molecules is

30, 000

and molecular weight of another

20

molecules is

40, 000

then calculate the number average molecular weight (

{\bar{M}}_{n}

) of the polymer.

HARD

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

What is polydispersity index? Explain.

HARD

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Explain the method of determining the molar mass of the polymer.

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Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Polymer properties are closely related to their molecular mass, size and _____ .

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Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

The number average molar mass and mass average molar mass of a polymer are respectively 30,000 and 40,000. The polydispersity index (PDI) of the polymer is

MEDIUM

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

The number average molecular mass

({\bar{M}}_{n})

and the weight average molecular mass

({\bar{M}}_{w})

of the synthetic polymers are related as:

EASY

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

What is the polydispersity index of polymer if the mass average molecular mass & number average molecular mass of a polymer are respectively 40,000 and 30,000?

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Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Explain the determination of molecular mass of polymers by weight average molecular weight method.

HARD

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Why molecular weight of polymers is taken as average molecular weight. How many types average molecular weight can be represented? Explain each type.

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Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Define molecular mass of a polymer.

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Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

The most suitable method for determination of the molecular mass of polymer is?