With the usual notation, the first law of thermodynamics applied to one mole of an ideal gas can be written in the following form:CVΔT=ΔQ - PΔVIn a change for which Boyle's law is obeyed, which of the following would necessarily be zero?
Correct answer: C. ΔT
- A. ΔQ
- B. CV
- C. ΔT
- D. P
- E. ΔV
Explanation
Boyle's Law states that when the temperature of a given mass of confined gas is constant, the product of its pressure and volume is also constant. So for Boyles law to be observed change in temperature (∆T) must be equal to zero.
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About First Law of Thermodynamics
The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.
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