Question

Gas inside a piston-cylinder device initially at the pressure of 7 bar and volume of o m expands to 0.5 m according to PV" Constant. (i.e. PV -Constant ), determine the work done and the final pressure in 17] i. Ifn this process. ii. If the value of n is changed to 1.5, determine the final pressure. ii. Draw both processes (i.e. when n-1 and -1.5) on a P-V diagram iv. Explain why and how does the value of the index, n, affect the work done of the system. When no, what process do we get and why?

Answer 1

Given, Volurme , initiol Vi o.am Volume, findl o pvn-constant i, Given n .) PV-coret nt, Toothesmol Psocese Vi n=1,5 l.5 11, PV5 conskont n-l 1. 5 1.5

R-1.77bar iiレ nRectorguad hypeybob) レ, v, foi PV-constant, noe have der-P fox pv- corstort, we have dv mes the slope of pv cuwe in isothemol Avea undes PV gives wort done. if n ie infinity ntrres pv aives V constant .. Thot is 1sochork process