问题
选择题
已知:
2CO(g) + O2(g) = 2CO2(g) △H= -566kJ/mol
N2(g) + O2(g) = 2NO(g) △H= +180kJ/mol
则2CO(g) +2NO(g) = N2(g) +2CO2(g)的△H是[ ]
A.-386 kJ/mol
B.+ 386 kJ/mol
C.-746 kJ/mol
D.+746 kJ/mol
答案
答案:C
已知:
2CO(g) + O2(g) = 2CO2(g) △H= -566kJ/mol
N2(g) + O2(g) = 2NO(g) △H= +180kJ/mol
则2CO(g) +2NO(g) = N2(g) +2CO2(g)的△H是[ ]
A.-386 kJ/mol
B.+ 386 kJ/mol
C.-746 kJ/mol
D.+746 kJ/mol
答案:C