What is the work done by gas, given V, T and P

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SUMMARY

The work done by gas during an isobaric process can be calculated using the formula W = PΔV, where P is the constant pressure and ΔV is the change in volume. In the given scenario, with an initial volume V1 of 0.5 m³, a final volume V2 of 0.683 m³ is determined after heating the gas from T1 = 0°C to T2 = 100°C. The pressure is maintained at p = 3·105 Pa. Thus, the work done by the gas can be computed directly using these values.

PREREQUISITES
  • Understanding of isobaric processes in thermodynamics
  • Familiarity with the ideal gas law and its applications
  • Basic knowledge of calculus for integrating pressure and volume
  • Ability to convert temperature units from Celsius to Kelvin
NEXT STEPS
  • Study the ideal gas law and its implications for gas behavior
  • Learn about thermodynamic processes, focusing on isobaric and isochoric processes
  • Explore the derivation and applications of the work done by gases formula W = PΔV
  • Investigate real-world applications of gas laws in engineering and physics
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Students in physics, engineers working with thermodynamic systems, and anyone interested in understanding gas behavior during heating and pressure changes.

arddi2007
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Homework Statement



0.5 m3 of air is located in a vessel. Their temperature is T1=0oC and the pressure is p=3·105. What work will be done when heating the gas with constant pressure (isobaric process) to T2=100oC?

Homework Equations



I was unable to find any equation regarding to the work done by gases. This is a part of physics I'm not so good at. But these equations might be useful too:

Isobaric process (with constant pressure):

V1/T1=V2/T2

From that equation we can find the value of V2.

The Attempt at a Solution



V1/T1=V2/T2
V2=V1T2/T1

After converting and substituting the values, we get the value of V2:

V2=0.683 m3.

Still, I am unable to find any relevant equation for work done by gases and I would appreciate any help. Thank you very much!
 
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arddi2007 said:
Still, I am unable to find any relevant equation for work done by gases and I would appreciate any help.

The work done is [itex]W=\int P\,dV[/itex]. You really couldn't even find this with an Internet search?
 
It's handy to remember, in terms of the units involved, that the product of pressure and volume yields energy. That is, N/m2 x m3 --> Nm --> Joules.

So if pressure is kept the same, the work done will be PΔV.
 

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