CHEM 1A Lecture Notes - Lecture 10: Ideal Gas, Cross-Linked Polyethylene, Thermochemistry
Document Summary
( e cture / o enthalpy , thermochemistry. & bond energies corresponding chapters : 4c , 413 , 4e. V are all state functions at constant pressure : Oh = q t w t pov pressure. Oh = q - pex ov + pdv. The system can do no work other than expansion work s. Oh = q ( pex =p as the system is open to atmosphere ) T at constant pressure with no expansion work ( oh = cfp constant pressure : e . (constant pressure system ) the heat the system releases and requires = change in enthalpy of the system. Energy goes to system 4 enthalpy. " energy leaves system to enthalpy (endothermic ) oh > o ( exothermic: hao. 1b q = 50 kj leaves ; w = 20 kj leaves. Go " % ,; yetag; - wks) 9=+30 kj w = -140 kj.
