Chapter 11, Problem 42IL

Interpretation Introduction

Interpretation: The $1L$ of ethanol kept in the laboratory is whether got vaporized completely or not has to be determined. If the ethanol is not completely vaporized, the remaining amount of ethanol has to be determined.

Concept Introduction:

• According to ideal gas equation

  $\begin{array}{l}\text{V }\propto \frac{\text{nT}}{\text{P}}\\ \text{V = R}\frac{\text{nT}}{\text{P}}\\ \text{PV = nRT}\end{array}$

Where,

    $\begin{array}{l}\text{n = moles}\text{of}\text{gas}\\ \text{P = pressure}\\ \text{T = temperature}\\ \text{R = gas }\text{constant}\end{array}$

• Equation for density is,

$\text{Density}\text{=}\frac{\text{Mass}}{\text{Volume}}$

• From its given mass is,

 $\text{Number of moles}\text{=}\frac{\text{Given}\text{mass}}{\text{Molecular}\text{mass}}$