Q. 15

Is it possible to increase the temperature of a gas without adding heat to it? Explain.

Answer :

In a closed system, in absence of external force field present, if internal energy of system is ‘U’ and amount of heat absorbed in the system is ‘q’ then internal energy will become U1+q. After this if ‘W’ is the amount of work is done on the system then final energy is given by U2,


According to 1st law of thermodynamics which states that the change in internal energy of a system is equal to the heat added to the system minus work done by the system.



But here work is done on the system. So,



According to question, no heat is given or taken out of the system, so this is an adiabatic process.


if q=0


Then,


In adiabatic compression, work done on the system is positive.



As is given by


n = No. Of moles


Cv= Specific heat capacity at constant volume.


= Change in temperature


Temperature increases when internal energy increases.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Calorimetry - 02 | Mastering important conceptsCalorimetry - 02 | Mastering important conceptsCalorimetry - 02 | Mastering important concepts39 mins
Enthalpy & Heat Capacity | Interactive QuizEnthalpy & Heat Capacity | Interactive QuizEnthalpy & Heat Capacity | Interactive Quiz55 mins
Thermodynamics | Types of EnthalpyThermodynamics | Types of EnthalpyThermodynamics | Types of Enthalpy66 mins
Hess LawHess LawHess Law61 mins
An interesting lecture on EntropyAn interesting lecture on EntropyAn interesting lecture on Entropy63 mins
Heat Transfer - 01 | Mastering important conceptsHeat Transfer - 01 | Mastering important conceptsHeat Transfer - 01 | Mastering important concepts40 mins
Kinetic Theory of GasesKinetic Theory of GasesKinetic Theory of Gases46 mins
Entropy | Rapid QuizEntropy | Rapid QuizEntropy | Rapid Quiz45 mins
Heat Transfer -02 | Mastering important conceptsHeat Transfer -02 | Mastering important conceptsHeat Transfer -02 | Mastering important concepts49 mins
Enthalpy of NeutralisationEnthalpy of NeutralisationEnthalpy of Neutralisation40 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :