Chapter 14, Problem 14A.1E

Interpretation Introduction

Interpretation:

Number average molar mass and weight average molar mass of the mixture has to be determined.

Concept introduction:

The number average molar mass is determined by using following formula,

${\stackrel{-}{\text{M}}}_{\text{n}}=\frac{1}{\text{N}}{\displaystyle \sum _i{N}_i{M}_i}$

$\stackrel{\text{-}}{{\text{M}}_{\text{n}}}\text{=Number average molar mass}$

The weight average molar mass is determined by using following formula,

  ${\stackrel{-}{\text{M}}}_w=\frac{{\displaystyle \sum _i{N}_i{M}_i^2}}{{\displaystyle \sum _i{N}_i{M}_i}}$

  $\stackrel{\text{-}}{{\text{M}}_{\text{w}}}\text{=Weight average molar mass}$