Question

Part II-Short Answer 13) Answer the following guestions about entropy and enthalpy (6 pts) A) The boiling temperature of liquid ethanol is 78.45 "C and the AHyan is 38.56 kJ/mol. Calculate the ASyap for ethanol. AS13481,u22 l 3H-TS AHvap tb T AS= TOH Vap 1091md? 03 351.45K(38-50k3mol) B) ASvap for oxygen is 37.8 J/mol K at its boiling temperature of -182.9 C Calculate the change in entropy of the oxvgen when 7,40 moles of gas is condensed into liquid oxygen at that temperature. 197 9c As vap 7.83I mol k

Answer 1

iupac

s Svap = THval To 38.56X1000 351.45 = 109.7 K-mon 6 Aswap. = 37.8*7.40 - 1919.28] *