ΔcHm?(石墨)=-393.7kJ/mol,ΔcHm?(金刚石)=-395.8kJ/mol,则反应C(石墨)=C(金刚石)的焓变应为()
8 查阅
ΔcHm?(石墨)=-393.7kJ/mol,ΔcHm?(金刚石)=-395.8kJ/mol,则反应C(石墨)=C(金刚石)的焓变应为()
A.-789.5kJ/mol
B.-2.1kJ/mol
C.+2.1kJ/mol
D.+789.5kJ/mol
参考答案: