Question

Scientists wished to determine the heat of formation of gaseous ethanol (C2H5 OH). Known was the heat of formation of liquid ethanol (-277 kJ/mol) as well as the standard entropy of formation of liquid ethanol (159.9 J/molK) Please help out the scientists (that is negative 5170) when InPvap was plotted against Measurements of Pvap (T) produced a slope of -5170K 1/T (with T in Kelvin) Compute the AH of vaporization and then use your appendix to compute the heat of formation of gaseous ethanol. Measurements of the normal boiling point of ethanol yields 351.5K (with an error of 0.2K). What is the absolute entropy of gaseous ethanol? AH of vaporization ki/mol kJ/mol. AH of formation of gaseous ethanol /mol-K S of formation of gaseous ethanol Fullscreen

Answer 1

ря ( 4, ои, 1) - - 7 а д-р = (-он") - не - — 176 к Дн° . - 70 x 8 31ч Кл а) Тооо дн° — 42.98 кг /ло /

42450H -54501(3) SHOES (C2H5-04, 0) -24°(<2 H-OH, I? Auto (53 450H, 9 ) = -2 77KT - mal + 42.98 KJ = -234.02 kJ mo) OH, JJ--234.02 KJ ima

Лs° - де ч 298х10 - - член по 1- 351.5 ло - 1 22 23 эт)-«//k Дs 2 12 2 283) м-k)