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CH3Br, 151109 Agust, www,....Nov09/PPT-151109ak

CH3Br, 151109 Agust, www,....Nov09/PPT-151109ak.ppt. CH3Br(g):. Quantity Value Units Method Reference Comment Δ fH°gas -34. 3 ± 0.8 kJ/mol Eqk Ferguson, Okafo, et al., 1973 Δ fH°gas -38. ± 1.3 kJ/mol Chyd Adams, Carson, et al., 1966

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CH3Br, 151109 Agust, www,....Nov09/PPT-151109ak

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  1. CH3Br, 151109 Agust, www,....Nov09/PPT-151109ak.ppt

  2. CH3Br(g): Quantity Value Units Method Reference Comment ΔfH°gas -34.3 ± 0.8 kJ/mol Eqk Ferguson, Okafo, et al., 1973 ΔfH°gas -38. ± 1.3 kJ/mol Chyd Adams, Carson, et al., 1966 ΔfH°gas -37.5 ± 1.5 kJ/mol Chyd Fowell, Lacher, et al., 1965 HBr(g): CH3Br(g) Quantity Value Units Method Reference Comment ΔfH°gas -36.29 ± 0.16 kJ/mol Review Cox, Wagman, et al., 1984 CODATA Review value ΔfH°gas -36.44 kJ/mol Review Chase, 1998 Data last reviewed in September, 1965

  3. H2(g) Quantity Value Units Method Reference Comment ΔfH°gas 716.68 ± 0.45 kJ/mol Review Cox, Wagman, et al., 1984 CODATA Review value ΔfH°gas 716.67 kJ/mol Review Chase, 1998 Data last reviewed in March, 1983 CH3Br(g) -> H2(g) + C(g) + HBr(g) DH = -36.29 + 0 + 716.68 + 34.3 = 714.69 kJ mol-1 = 714.69 x 83.59346 = 59743.4 cm-1 DE = DH –RTDng = 714.69 – 8.3144*1e-3*298*2 = 709.71kJ mol-1 709.73* 83.59346 =59329 cm-1 -to be compared with the value of 58840 from AB (041109)

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