EASY

Earn 100

The number average molecular mass and weight average molecular mass of a polymer are $30, 000$ and $40, 000$ respectively. The PDI of the polymer is

50% studentsanswered this correctly

Important Questions on Polymers

MEDIUM

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?

MEDIUM

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

The polydispersity index of the polymer is always:

MEDIUM

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.

EASY

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

What is PDI (Poly Dispersity Index)?

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.

HARD

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

What is polydispersity index? Explain.

HARD

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Why PDI of proteins is one?

MEDIUM

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

For natural polymers PDI is generally

EASY

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Molecular weight of the polymer can be controlled by

MEDIUM

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

Write formula for number average molecular weight (

{\bar{M}}_{n}

MEDIUM

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

In a polymer, there are

300

molecules with a molecular weight of

100, 200

molecules with a molecular weight of

1000

and

100

molecules with a molecular weight of

10000 .

The number average molecular weight of polymer is

HARD

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Polymers have

EASY

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

HARD

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Formation of polyethylene from calcium carbide takes place as follows

{CaC}_{2} + 2 H_{2} O \to Ca (OH)_{2} + C_{2} H_{2}

C_{2} H_{2} + H_{2} \to C_{2} H_{4}

The amount of polyethylene obtained from

64 kg

{CaC}_{2}

EASY

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

In a polymer sample

30 %

of molecules have a molecular mass of

20, 000, 40 %

have

30, 000

and the rest

60, 000 .

What is the weight average molecular mass of the polymer?

MEDIUM

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

The number average molecular mass and mass average molecular mass of a polymer are respectively 30,000 and 40,000. The poly dispersity index of the polymer is

MEDIUM

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

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

EASY

Chemistry>Organic Chemistry>Polymers>Molecular Masses of Polymers

Number average molecular mass,

\bar{M_{n}}

and weight average molecular mass

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

of synthetic polymers are related as

The number average molecular mass and weight average molecular mass of a polymer are 30,000 and 40,000 respectively. The PDI of the polymer is

Important Questions on Polymers

Learn and Prepare for any exam you want !

The number average molecular mass and weight average molecular mass of a polymer are $30, 000$ and $40, 000$ respectively. The PDI of the polymer is