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Use standard enthalpies of formation (in Appendix G in text) to calculate ∆H°rxn for each reaction.  ...

  1. Use standard enthalpies of formation (in Appendix G in text) to calculate ∆H°rxn for each reaction.  

∑ m∆H°f (products)  -  ∑n∆H°f (reactants), where m and n are coefficients.

  1. C2H4(g)  +  H2(g) ----- > C2H6(g)
  2. CO (g)  +  H2O (g)  ----- > H2(g)  +  CO2(g)
  3. 3NO2(g)  +  H2O (l) ----- >  2HNO3(aq)  +  NO (g)
  4. 2SO2(g) + O2(g) -----------> 2SO3(g)
  5. 2C4H10 (g) + 13O2 (g) -----------> 8CO2 (g) +  10H2O (g)

    Substance --- ΔH° (kJ mol–) --- ΔG° (kJ mol–1) --- S°298 (J K–1 mol–1)
    C2H4              52.4                       86.4                      219.3
    H2                   0                            0                          130.7

    C2H6              -84.0                      -32.0                     229.2
    CO                 -110.52                  -137.15                   197.7
    H2O               -285.83                 -237.1                        70.0

    CO2                -393.51                   -394.36                 213.8
    NO2                33.2                       51.30                       240.1
    NO                  90.25                    87.6                         210.8
    SO2                -296.83                  -300.1                     248.2
    O2                   0                            0                             205.2
    SO3                -395.72                 -371.06                     256.76

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Answer #1

Individual 440 values are giver as to be found. and other Atorn & ImBtu/products) - Enath (rea- tants) Equation 1: Cathy & th- 90.25 – 3x (33.2) - 2 - 1 - 3 <3 equation ui 25021g) & Only 25039 stern = 2x et (50₂) – Bt (02) - 2x 6te (SO₂) - 2x (-395-1

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