Search results with tag "Standard enthalpies of formation"
Thermodynamics
www.chem.tamu.eduStandard reaction enthalpy (∆Ho) refers to reactions where all products and reactants are in their standard state . Definitions of Standard States • For a gas the standard state is a pressure of exactly 1 atmosphere. ... Standard Enthalpies of Formation .
Spontaneous Processes and Spontaneity, Entropy, Free Energy
ww2.odu.eduStandard Entropies and the Third Law of Thermodynamics • The standard entropyof a substance or ion (Table 19.1), also called its absolute entropy, So, is the entropy value for the standard state of the species. • Note that the elements have nonzero values, unlike standard enthalpies of formation, ∆Hfo, which by convention, are zero.
Standard Enthalpies of Formation
www.chemistry.alanearhart.orgStandard Enthalpies of Formation Alan D. Earhart 11/7/2016 Substance ΔH° f (kJ/mol) Substance ΔH° f (kJ/mol) Substance ΔH° f (kJ/mol) AgCl(s) -127.0 CaSO4(s) -1434.5 N 2H 4(g) +95.4 Al 2O 3(s)-1675.7 Fe 2O 3(s) -824.2 N 2H 4(l) +50.6 CHCl 3(g) -103.2 HBr(g) -36.4 N 2O(g) +82.1 CH 2Cl 2(g) -95.5 HCl(g) -92.3 N 2O 4(g) +9.1 CH 2O(g) -115.9 HF(g) -272.6 N
Standard Enthalpies of Formation - Alan D. Earhart
chemistry.alanearhart.orgStandard Enthalpies of Formation Alan D. Earhart 11/7/2016 Substance ΔH° f (kJ/mol) Substance ΔH° f (kJ/mol) Substance ΔH° f (kJ/mol) AgCl(s) -127.0 CaSO4(s) -1434.5 N 2H 4(g) +95.4 Al 2O 3(s)-1675.7 Fe 2O 3(s) -824.2 N 2H 4(l) +50.6 CHCl 3(g) -103.2 HBr(g) -36.4 N 2O(g) +82.1 CH 2Cl 2(g) -95.5 HCl(g) -92.3 N 2O 4(g) +9.1 CH 2O(g) …