   Chapter 10, Problem 24PS

Chapter
Section
Textbook Problem

Diethyl ether, (C2H5)2O, vaporizes easily at room temperature. If the vapor exerts a pressure of 233 mm Hg in a flask at 25 °C, what is the density of the vapor?

Interpretation Introduction

Interpretation:

The density of diethyl ether in a flask at 25°Candapressureof233mmHg has to be given.

Concept Introduction:

Density of a gas can be find out with the help of ideal gas equation which is

PV=nRT

n in the given equation can be written as mM Since amount of any substance is given by dividing mass with molar mass.

PV=mMRTmV=PMRTdensity=PMRT

Explanation

The density of diethyl ether vapour at 25°Candapressureof233mmHg.

We know that density=PMRT

Given:

Molarmassof(C2H5)2O=74.12g/molP=233mmHg=0.3065atmT=25°C

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