The most common type of molecular weights used in the case of polymer is :

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Answer 1

The most common type of molecular weights used in the case of polymers is number average molecular weight method.
It gives the relationship between the number of moles of each polymer species ( $N_{i}$ ) and the molar mass ( $M_{i}$ ) of that species as, $M_{n} = \frac{Σ M _{i} N _{i}}{Σ N i}$ .

Answer 2

The most common type of molecular weights used in the case of polymers is number average molecular weight method.
It gives the relationship between the number of moles of each polymer species (

N_{i}

) and the molar mass (

M_{i}

) of that species as,

M_{n} = \frac{Σ M _{i} N _{i}}{Σ N i}

.

The most common type of molecular weights used in the case of polymer is :

number average molecular weight method

z - average molecular weight method

viscosity average molecular weight method

all of the above

Solution

The most common type of molecular weights used in the case of polymers is number average molecular weight method.
It gives the relationship between the number of moles of each polymer species ( $N_{i}$ ) and the molar mass ( $M_{i}$ ) of that species as, $M_{n} = \frac{Σ M _{i} N _{i}}{Σ N i}$ .

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The method preferred for determining the molecular weight of a polymer is___________.

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

Average molecular mass of a polymer is determined by:

Molecular weights of macromolecules are determined by :

Assertion:
$\overset{ˉ}{M_{n}}$ value is always greater than $\overset{ˉ}{M_{w}}$ value for synthetic polymers.

Reason:
The mass average molecular weight of the polymer is equal to $\overset{ˉ}{M_{w}}$ .

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The most common type of molecular weights used in the case of polymer is :

number average molecular weight method

z - average molecular weight method

viscosity average molecular weight method

all of the above

The most common type of molecular weights used in the case of polymers is number average molecular weight method. It gives the relationship between the number of moles of each polymer species (Ni​) and the molar mass (Mi​) of that species as, Mn​=ΣNiΣMi​Ni​​.

Patterns of problems

Was this answer helpful?

Similar questions

The method preferred for determining the molecular weight of a polymer is___________.

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

Average molecular mass of a polymer is determined by:

Molecular weights of macromolecules are determined by :

Assertion:Mn​ˉ​ value is always greater than Mw​ˉ​ value for synthetic polymers. Reason:The mass average molecular weight of the polymer is equal to Mw​ˉ​.

More From Chapter

Polymers

Shortcuts & Tips

Common Misconceptions

Mindmap

Important Diagrams

Cheatsheets

Practice more questions

6 Qs

3 Qs

3 Qs

4 Qs

1 Qs

44 Qs

The most common type of molecular weights used in the case of polymers is number average molecular weight method.
It gives the relationship between the number of moles of each polymer species ( $N_{i}$ ) and the molar mass ( $M_{i}$ ) of that species as, $M_{n} = \frac{Σ M _{i} N _{i}}{Σ N i}$ .

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

Assertion:
$\overset{ˉ}{M_{n}}$ value is always greater than $\overset{ˉ}{M_{w}}$ value for synthetic polymers.

Reason:
The mass average molecular weight of the polymer is equal to $\overset{ˉ}{M_{w}}$ .