Physical Chemistry Plus Mastering Chemistry With Etext -- Access Card Package (3rd Edition) (engel Physical Chemistry Series)
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Chapter 2, Problem 2.34NP

(a)

Interpretation Introduction

Interpretation: The change in temperature for 1 mole of an ideal gas needs to be determined if heat released is 425 J and work done on the system is 185 J.

Concept Introduction: The change in internal energy is calculated as follows:

  ΔU=nCV.m(TfTi)

Here, n is number of moles, CV,m is molar heat at constant volume and T is temperature.

The work done is represented as follows:

  w=PexternalΔV

Here, P is external pressure and ΔV is change in volume.

The enthalpy of a reaction is represented as follows:

  ΔH=ΔU+nRΔT

Here, n is number of moles, R is Universal gas constant and ΔT is change in temperature.

(b)

Interpretation Introduction

Interpretation: The change in temperature for 1 mole of an ideal gas needs to be determined if heat absorbed is 315 J and work done by the system is 315 J.

Concept Introduction: The change in internal energy is calculated as follows:

  ΔU=nCV.m(TfTi)

Here, n is number of moles, CV,m is molar heat at constant volume and T is temperature.

The work done is represented as follows:

  w=PexternalΔV

Here, P is external pressure and ΔV is change in volume.

The enthalpy of a reaction is represented as follows:

  ΔH=ΔU+nRΔT

Here, n is number of moles, R is Universal gas constant and ΔT is change in temperature.

(c)

Interpretation Introduction

Interpretation: The change in temperature for 1 mole of an ideal gas needs to be determined if no heat is involved and work done on the system is 225 J.

Concept Introduction: The change in internal energy is calculated as follows:

  ΔU=nCV.m(TfTi)

Here, n is number of moles, CV,m is molar heat at constant volume and T is temperature.

The work done is represented as follows:

  w=PexternalΔV

Here, P is external pressure and ΔV is change in volume.

The enthalpy of a reaction is represented as follows:

  ΔH=ΔU+nRΔT

Here, n is number of moles, R is Universal gas constant and ΔT is change in temperature.

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Chapter 2 Solutions

Physical Chemistry Plus Mastering Chemistry With Etext -- Access Card Package (3rd Edition) (engel Physical Chemistry Series)

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