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Heat and free energy of formation of water and of carbon monoxide

1939; US government; Volume: 22; Issue: 4 Linguagem: Inglês

10.6028/jres.022.029

2376-5305

Frederick D. Rossini,

Advanced Thermodynamics and Statistical Mechanics

Thermodynamic data were combined to yield values for the heats and free energies, per mole, of the following reactions, with each substance in the thermodynamic standard state:H z(g)+1 /20 z(g)=HzO(liq), LlfloZiS.1S=-285,795±40 into j (-68,318.1 ±9.6 cal) , LlFoz9s.16=-237, 163 ±47 into j (-56,692.8± 11.2 cal); HzO(liq)=HzO(g), LlHozoS .16=44,007±1 3 into j (10,519.7 ±3. 1 cal), LlFoZiS.I&= 8597 ± 4 into j (2055.1 ± 1.0 cal); H z(g)+1/20z(g)=H zO(g), LlWzis.I&= -241,788 ±42 into j (-57,798.4± 10.0 cal) , LlFozo8.ls=-228,566 ±47 into j (-54,637.7 ± 11.2 cal); CO(g)+1/20z(g)=COz(g), LlWZ iS .!6=-282,942 ±120int.j (-67,636.1 ±28.7 cal), LlFom .16= -257,069 ± 121 into j (-61,451.2± 29.0 cal); C (c, graphite) + 1/20z(g) = CO(g), LlHoZiS.IS= -110,413 ± 129 into j (-26,393.8± 30.8 cal), t.FoZiS.16=-137,158 ± 133 into i (-32,787.0± 31.8 cal); Hz(g) +COz(g) =HzO(g) +CO(g) , LlWzi8.lo=41,154 ±127 int o j (9837 .7 ± 30.4 cal), t.Fom .,s=28,504±130 into i (6813.8 ± 31.1 cal); C (c, graphite)+COz(g)=2CO(g), t.Hom .ls= 172,529 ±244 into j (41,242.3 ± 58.4 cal), LlFo2iS.l0= 119,911± 248 into j (28,664.2 ± 59.3 cal).