已知C (石墨)+O2(g)=CO2(g) △rHm= -393.5 kJ·mol-1;CO(g)+(1/2)O2(g) = CO2(g) △rHm = - 283.0 k
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已知C (石墨)+O2(g)=CO2(g) △rHm= -393.5 kJ·mol-1;CO(g)+(1/2)O2(g) = CO2(g) △rHm = - 283.0 kJ·mol-1,则C(石墨)+(1/2) O2(g)=CO(g) 的反应热为 ?
A.-110.5 kJ/mol
B.110.5 kJ/mol
C.-676.5 kJ/mol
D.676.5 kJ/mol

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-100.6 kJ·mol –1
