Question

Given the values of AHX, ASx, and T below, determine AS univ

spontaneous or nonspontaneous

spontaneous or nonspontaneous

spontaneous or nonspontaneous

spontaneous or nonspontaneous

Answer 1

293 A. Ahir = -90 kJ , DS260= -152 J/K, T = 293 K and Asuniv = ? s Sono = AS system = -152 JlK O Sisuma = - SHaro - - 690 *109)-307.16 DS. A Sagston + DS surrounding DS unir = - 152 + 307 Sunio = 155 J/K o 1160 JIK) asuniv = 1.6810²tk is two significant figures. :. Dsum >o The process is spontaneous. 2V

B. SHoxn = -90 kJ, O Saxo = -152 OK T = 765k and D Suniv = ? Asim = DS syst + De our UNV -152 65 = -152 + 117.64 = -34-36 JSK 30 JK ] I D Suniu =-0.3 x 10² ulk) = Non-spontaneous. C. Alizem = + 90 kJ , D Srpe = -152 OK T = 293k and as univ = ? Sunio = D Sugust + os sur = -152 + (90 ) E - 152 - 30=1:16 = - 459.06 TIK lo Sunw=-460 J/K) & Non-spontaneous.

D. DH = -90 KJ, DSaxn = +152 g/k T= 397 K and DSunio = ? Sony = D Soys + Assum сон" • +152 +1-60 = 152 + 226.7 = 378 J/KS To suir = 3805/1 Reaction process is spontaneous.