   # Which gas has the greatest density at 25 ℃ and 1.00 atm pressure? (a) O 2 (b) N 2 (c) H 2 (d) CO 2 (e) Xe ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 10.3, Problem 1RC
Textbook Problem
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## Which gas has the greatest density at 25 ℃ and 1.00 atm pressure? (a) O2 (b) N2 (c) H2 (d) CO2 (e) Xe

Interpretation Introduction

Interpretation:

The gas with greatest density from the given gases at 250C and 1.00atm pressure has to be determined.

Concept introduction:

The density of gas at a given temperature and pressure can be calculated by using the formula,

Densityd=mV=PMRTm=givenmassM=molarmassP=pressureT=temperatureinKR=Gasconstant0.082057L.atm/K.mol

This density of gas is expressed in g/L unit.

### Explanation of Solution

The density of the gas has to be calculated at 250C and 1.00atm by using the equation,

Densityd=mV=PMRTm=givenmassM=molarmassP=pressureT=temperatureinKR=Gasconstant0.082057L.atm/K.mol

Molar mass of Xe is 131.29g/mol

Substituting the known quantities in the above equation,

Densityd=1.00atm×131.29g/mol0.082057L.atm/K.mol×298K =5

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