Oblicz entalpię reakcji utleniania miedzi na gorąco na podstawie danych:
CuO + C ⇒ Cu + CO ΔH + 44 kJ
CuO + ½O₂ ⇒ CO ΔH = - 111 kJ
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ΔH1= 44kJ
ΔH2= -111kJ
ΔHx= ?
*(-2)/ CuO + C ------> Cu + CO / ΔH1
*(2)/ C+ 1/2O₂ -----> CO / ΔH2
_________________________
2Cu + O2 -------> 2CuO / ΔHx
ΔHx= 2ΔH2 + (-2)ΔH1
ΔHx= -222-88
ΔHx= -310kJ