Chapter 16, Problem 16A.1P

(a)

Interpretation Introduction

Interpretation:

The effective molecular diameter of ${\text{NH}}_{\text{3}}$ at $270\text{ K}$ and $1.00\text{ bar}$ pressure with vapor-phase viscosity coefficient $9.08\times {10}^{-6}{\text{ kg m}}^{-1}{\text{ s}}^{-1}$ has to be calculated.

Concept introduction:

Viscosity is called the property of a fluid that is “a measure of its resistance to flow”.  It is the consequence of a molecular attraction and denotes the internal friction of a moving fluid.  A fluid with high viscosity resists motion due to its high molecular interaction.  The substances with low intermolecular interaction have lower viscosity.  The effective molecular diameter of the molecule depends inversely on the viscosity of the substance.

(b)

Interpretation Introduction

Interpretation:

The effective molecular diameter of ${\text{NH}}_{\text{3}}$ at $490\text{ K}$ and $10.0\text{ bar}$ pressure with vapor-phase viscosity coefficient $1.749\times {10}^{-5}{\text{ kg m}}^{-1}{\text{ s}}^{-1}$ has to be calculated.

Concept introduction:

As mentioned in the concept introduction in part (a).