Question

please do all the questions below with proper working steps.

Initially, the volume and pressure of 0.1 mol of methane gas are 2.90 L (b) and 1 atm, respectively. The gas is allowed to expand adiabatically and reversibly to a pressure of 0.1 atm. Assume that the gas behaves ideally and the value of Cp/Cv is 1.31. (i) What is the final temperature of the gas? (ii) Calculate q, w, AU and AH in joule () for the process. (ii) Could the process be carried out isothermally? (iv) Suggest an alternative path to attain the same final state. Sketch both paths in a PV diagram. (17 marks) 4. (a) Explain clearly what is meant by a thermodynamically reversible process. (3 marks)

Answer 1

2.96% 16" m 오.go LtY v, 여dia baktauY Pocess: Expand jas ideal os idkal Gas Adiabat'c Expavd So, T P So -0.2366 0 2366 353 y3メくや1) -02266 Ъ 353.43 X 06 99 final Tamp. of Ca

o'3) 83Lx 353-43 8.3) 니 X 3.5343 0, 31 W: -3.98 kJ Je,dT 3 ) meimu

fem ideal uas -3980 20ナ 0.X83,4(Ray-91-35343) 一3980.20-123,Y2 - This focess is nst GMA alơnt by isothermally bear Entha/phy is Equal fo Zeyo, beca시 Hesse ave org fucton of temp Altemative fath Shnon n this figure a and 3 whene

#Afrocess is)evets ible so, tuat its Direcho, on be by an Small cha at any Pi zjt s Cnh.nrus bue'as aves a Mf whe No. 업 ferit Enthophy Yev