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

Question

Verified by Toppr

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

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, $M_{n} = \frac{Σ M _{i} N _{i}}{Σ N i}$ .

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 $\overset{ˉ}{M_{w}}$ .

Average molecular mass of a polymer is determined by:

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

Molecular weights of macromolecules are determined by :

Revise with Concepts

Chain Growth Polymerisation (Addition polymerisation)

Step Growth Polymerisation (Condensation Polymerisation)

Copolymerisation

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​​.

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​.

Average molecular mass of a polymer is determined by:

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

Molecular weights of macromolecules are determined by :

Revise with Concepts

Chain Growth Polymerisation (Addition polymerisation)

Step Growth Polymerisation (Condensation Polymerisation)

Copolymerisation

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, $M_{n} = \frac{Σ M _{i} N _{i}}{Σ N i}$ .

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 $\overset{ˉ}{M_{w}}$ .

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