Exercises on isobaric transformation
On this page you will find a collection of exercises on isobaric transformation.
In isobar transformations the pressure of the system remains constant, that is, the system undergoes a transformation (such as expansion or compression) without its pressure changing. As we shall see, during an isobaric transformation the pressure remains constant while both temperature and volume are free to change.
These exercises on isobaric transformation are mainly aimed at high school, high school and three-year students, but anyone interested in the subject can benefit from them!
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Solved exercises
On the work of an isobaric transformation
A mole of monatomic perfect gas has an initial volume 
to the pressure 
and undergoes isobaric expansion until the final volume 
doubles
- Calculate the work of the isobaric transformation
- Is the work accomplished or undergone by the gas?
[
; Accomplished by gas]
On the calculation of pressure in an isobaric transformation
Two moles of diatomic perfect gas are at the initial temperature 
. The gas, in thermal contact with a heat source, undergoes isobaric expansion until it reaches a final temperature 
. If the work done by the gas during expansion is 
- Calculate the final temperature
[
]
On the heat of an isobaric transformation
A mole of monatomic perfect gas of initial volume 
undergoes isobaric expansion and its final volume is 
. If the constant pressure is 
- Calculate the heat
[
]
On the internal energy of an isobaric transformation
Two moles of diatomic perfect gas at initial temperature undergo isobaric compression at the pressure 
. If the volume in the final state 
è 
- Calculate the change in internal energy
[
]
On the calculation of heat in an isobaric transformation
A diatomic perfect gas performs a work 
and the difference between the volume in the initial state 
And the volume in the final state results in 
- Calculate the heat
[
]
On the calculation of temperature in an isobaric transformation
We consider a helium gas as a monoatomic perfect gas with atomic mass equal to 
. If the gas undergoes isothermal expansion by absorbing 
of heat
- Calculate the temperature change of
of perfect gas
of perfect gas[
]
On the calculation of work from Clapeyron's plane
Consider the isobaric transformation shown in the figure:
- Calculate the work done by the gas
[
]
On the calculation of specific heat at constant pressure
A perfect gas is brought into thermal contact with a heat source and undergoes isobaric expansion at constant pressure 
absorbing an amount of heat equal to 
. If the change in volume is equal to 
And the gas is neither monatomic nor diatomic
- Calculate the specific heat at constant pressure
[
]
On the work of an isobaric transformation of a helium gas
An amount equal to 
helium gas at the pressure 
Undergoes an isothermal expansion. If after the isobaric transformation the volume has increased by 
- Calculate the work done by the gas
- Calculates the change in temperature
[
;
]
On the units of measurement in an isobaric transformation
After isobaric compression, the final volume of a gas becomes 
of the initial volume 
. If the gas is at atmospheric pressure 
and exchanges an amount of heat equal to 
- Calculate the change in internal energy
[
]
