已知:C(s)+O2(g)=CO2(g)△H??=-393.5kJ?mol-12Mg(s)+O2(g)=2MgO(s)△H??=-601.8kJmol-12Mg(s)+2C(s)+3O2(g)=2MgCO3(s)△H??=-1113kJ?mol-1则MgO(s)+CO2(g)=MgCO3(s)的△Hr为()kJ?mol-1。


已知:C(s)+O2(g)=CO2(g)△H??=-393.5kJ?mol-12Mg(s)+O2(g)=2MgO(s)△H??=-601.8kJmol-12Mg(s)+2C(s)+3O2(g)=2MgCO3(s)△H??=-1113kJ?mol-1则MgO(s)+CO2(g)=MgCO3(s)的△Hr为()kJ?mol-1。

A.-235.4

B.-58.85

C.-117.7

D.-1321.3

正确答案:BC.第七


Tag:消防工程大学化学 时间:2024-01-20 14:15:15