Using the table of standard molar enthalpies of formation, (AH)298 , determine the standard reaction enthalpy, (AHA)298
Posted: Wed May 18, 2022 8:39 am
Using the table of standard molar enthalpies of formation, (AH)298 , determine the standard reaction enthalpy, (AHA)298 for the reaction of hydrogen chloride with ethylene (ethene) to form chloroethane: C2H4 (g) + HCl (g) → C2H5Cl (g) ө. (AH)298 kJ/ mol HCI (g) - 92.3 - + 52.3 C2H4 (g) C2H5Cl (g) - 111.7 -
thermodynamic relationships internal energy U = q + w enthalpy H = U + PV AH = AU + PAV gas law PV = nRT where R = 8.314 J/ mol K Hess's Law: AHR = [SAH products - [SAH) reactants = Kirchhoff's rule: (AHRST, -(AHRT, = (ACp (T2-T1) where: ACp = (Cp)(products) - E(Cp(reactants) standard molar entropy of a phase transition: AH ASE = Gibbs free energy: G = H - TS AG = AH – TAS -
thermodynamic relationships internal energy U = q + w enthalpy H = U + PV AH = AU + PAV gas law PV = nRT where R = 8.314 J/ mol K Hess's Law: AHR = [SAH products - [SAH) reactants = Kirchhoff's rule: (AHRST, -(AHRT, = (ACp (T2-T1) where: ACp = (Cp)(products) - E(Cp(reactants) standard molar entropy of a phase transition: AH ASE = Gibbs free energy: G = H - TS AG = AH – TAS -