   # In each pair of gases below, tell which will effuse faster: (a) CO 2 or F 2 (b) O 2 or N 2 (c) C 2 H 4 or C 2 H 6 (d) two chlorofluorocarbons: CFCl 3 or C 2 CI 2 F 4 ### 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, Problem 47PS
Textbook Problem
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## In each pair of gases below, tell which will effuse faster: (a) CO2 or F2 (b) O2 or N2 (c) C2H4 or C2H6 (d) two chlorofluorocarbons: CFCl3 or C2CI2F4

(a)

Interpretation Introduction

Interpretation: For the given set of gases CO2 and F2 that gas that effuses faster than the other one should be determined.

Concept introduction:

Effusion:

The movement of gas particles through a small hole is defined as effusion. The rate of effusion for a gas is inversely proportional to the square root of the mass of gas particles.

The root mean square velocity μ is defined as the measure of velocity of particle in gas. It is the method to determine the single velocity value for particles.

Root mean square velocity can be determined,

μrms=(3RTM)1/2 (1)

(gas constant)R=8.314JKmolM=Molarmass

Molar mass: The molar mass of a substance is determined by dividing the given mass of substance by the amount of the substance.

### Explanation of Solution

Considering the molar mass of both the given gases F2 gas effuses faster rate than CO2 since molar mass of F2 is 38g/mol where

(b)

Interpretation Introduction

Interpretation: For the given set of gases O2 and N2 that gas that effuses faster than the other one should be determined.

Concept introduction:

Effusion:

The movement of gas particles through a small hole is defined as effusion.  The rate of effusion for a gas is inversely proportional to the square root of the mass of gas particles.

The root mean square velocity μ is defined as the measure of velocity of particle in gas. It is the method to determine the single velocity value for particles.

Root mean square velocity can be determined,

μrms=(3RTM)1/2 (1)

(gas constant)R=8.314JKmolM=Molarmass

Molar mass: The molar mass of a substance is determined by dividing the given mass of substance by the amount of the substance.

(c)

Interpretation Introduction

Interpretation: For the given set of gases C2H4 and C2H6 that gas that effuses faster than the other one should be determined.

Concept introduction:

Effusion:

The movement of gas particles through a small hole is defined as effusion. The rate of effusion for a gas is inversely proportional to the square root of the mass of gas particles.

The root mean square velocity μ is defined as the measure of velocity of particle in gas.  It is the method to determine the single velocity value for particles.

Root mean square velocity can be determined,

μrms=(3RTM)1/2 (1)

(gas constant)R=8.314JKmolM=Molarmass

Molar mass: The molar mass of a substance is determined by dividing the given mass of substance by the amount of the substance.

(d)

Interpretation Introduction

Interpretation: For the given set of gases CFCl3 and C2Cl2F4 that gas that effuses faster than the other one should be determined.

Concept introduction:

Effusion:

The movement of gas particles through a small hole is defined as effusion.  The rate of effusion for a gas is inversely proportional to the square root of the mass of gas particles.

The root mean square velocity μ is defined as the measure of velocity of particle in gas.  It is the method to determine the single velocity value for particles.

Root mean square velocity can be determined,

μrms=(3RTM)1/2 (1)

(gas constant)R=8.314JKmolM=Molarmass

Molar mass: The molar mass of a substance is determined by dividing the given mass of substance by the amount of the substance.

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