①CH3COOH+2O2=2CO4+2H2O △rHM 1=-870.3KJ.mol
已知①2H2O+O2==2H2O(l0 4H=-57106KJ/mol
判断题:已知 4NH3(g)+5O2(g)=4NO(g)+6H2O(l) ΔrHmθ=-1170 kJ·mol-1
已知2H2(g)+O2=2H2O(l)△H=-571.6kJ/mol,CO(g)+1/2O2(g)=-285.8kJ/m
1mol水蒸气转化为液态水放出45KJ,则H2(g)+1/2 O2(g)=H2O(g)△H= kj/mol.氢气的燃烧热
2H2(g) + O2 (g) = 2H2O(l) △H = - 571.6 kJ/mol
4NH3+5O2=4NO+6H2O,△H=-906KJ/mol,2NO+O2=2NO2.△H=-57kj/mol,
请教几个化学题目1、25℃时,反应N2(g)+3H2(g)=2NH3(g)的△rHmθ = -93.38KJ.mol-1
H2(g)+1/2O2(g)==H2O(g) △H=+242KJ/mol , 2H2(g)+O2(g)==2H2O(g)
已知(1)2H2(g)+O2(g)=2H2O(g) △H=-483.6kJ.mol-1
(1)CH4(g)+2O2(g)=CO2(g)+2H2O(l),△H1=-890.3kj/mol
化学H2(g)+2/1O2(g)==H2O(g)△H1=-241.8kj/mol
H2的燃烧热是285.8kj/mol则2H2O=2H2+O2△H=571.6kj/mol为什么错了