University:
Swansea University
Course:
EGA109 | Introductory Organic Chemistry
Academic year:

2023
Views:

158

Pages:

3
Author:

Sanjeev K

Ind law disection of change. Heat doesn't flow spontaneously from cool t but body. Sol 70 Stol Ssys + Ssurr A spontaneous proces points towards direction in which total entropy increases. S is a stale function. ds, darw, os = f darev T 1 DS for system of isothermal expansion of perfect gas. DU2o; qo-W; grev=-Wrev ds darew/t DS=nRen VEN; or Dsm² nren Velvi 2 2 DS for erreverstole (spontaneous) process of a perfect gas. WOO, DU=O= no heat abs or removed Dsm Ren Velvi Sto Ren ve/vi V7Vi, spontaneous (irr) iso exp it gas Es accompanied by increase in entropy. Iso Rev Exp Stotal = Sys + Ssurr -Prev • Grev + Tree 20 T T Clausers Ineg as z da T In isolated, da 20 dszo Rev process. dstotal = 0 spontaneous in neither direction cy is at eq. . Irr. d Stotal > dssyst disurr 70 All spontaneous proces occurring in nature are imeversible by entropy of amiverse is increasing continuously Ist cynd Law summed: Energy of universe remams coustant; entropy of universe lends towards max etrange in intropy Heat Engine Device that transforms heat into work. Happem in cyllic process Reg. hot nesenoir to supply energy (94) ey wild reservoir to bake in excess energy(Ge) 9470 4 9 20