October 2020 0 283 Report
Calcule a entalpia ∆H, em kcal/mol, da reação: CO2(g) -> C(grafite,s) + O2, nas condições ambientes ( 25ºC e 1atm), sabendo-se que:  I- C2H6(g) +7/2O2(g) -> 2CO2(g) + 3H20(l) ∆Hº= -372,7kcal/mol 
II- 2C (s,grafite) + 3H2(g) -> C2H6 (g) ∆Hº= -20kcal/mol 
III- H2(g) + 1/2O2(g) -> H2O(l) ∆Hº= -68,3kcal/mol
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