H2(g)+1\2O2(g)=h2O(l) H=-285kj\mol c3h8(g)+5O2(g)=3CO2(g)+4H

来源：学生作业帮编辑：拍题作业网作业帮分类：化学作业时间：2024/04/27 20:34:32

H2(g)+1\2O2(g)=h2O(l) H=-285kj\mol c3h8(g)+5O2(g)=3CO2(g)+4H2O(g) H=-2220KJ\mol
1.实验测得h2和c3h8的混合气体共5mol,完全燃烧生成液态水释放热6262.5kj,则混合气体中h2和c3h8的体积比为--------?
2.已知：H2O(g）=H2O(g) H=+44KJ \MOL ,写出丙烷燃烧生成二氧化碳和气态水的热化学方程式：--------

1 设 H2 和丙烷分别是 X Y mol
则 x + y = 5
285x + 2220y = 6262.5 分别解得就可

已知2H2(g）+O2（g）=2H2O(l)；△H=-571.6kJ/mol,C3H8(g)+5O2(g)=3CO2(g 已知：H2(g)+1/2O2(g)==H2O(l);△H=-285.6kJ/mol C3H8(g)+5O2(g)==3C 高二化学2H2(g)+O2(g)=2H2O(1) △H=571、6kj、mol-1次方 C3H8(g)+5O2(g)=3 已知：CH4（g）+2O2（g）=CO2(g)+2H2O（l）△H=-890.3 KJ*mol-1H2(g)+0.5O2 已知2H2(g)+O2(g)==2H2O(l) △H=-571.6KJ/mol CH4(g)+2O2(g)==CO2(g 已知：2H2(g)+O2(g)=2H2O(l) △H=-571.6KJ/mol CH4(g)+2O2(g)=CO2(g) 已知2H2O(L)=2H2(g)+O2(g) △H=+571.6kJ/mol CH4(g)+2O2(g)=CO2(g)+ 已知2H2(g)+O2(g)=2H2O(g)△H=-484kj/mol 2H2(g)+O2(g)=2H2O(l)△H=- 2H2（g）+O2（g）=2H2O (l) H=-571.6kj/mol 2H2(g) + O2 (g) = 2H2O(l) △H = - 571.6 kJ/mol H2(g)+1/2O2(g)==H2O(g) △H=+242KJ/mol , 2H2(g)+O2(g)==2H2O(g) 已知：2H2(g)+O2(g)=2H2O(l) △H=-571.6kj/mol 2h2（g）+O2(g)=2H2O(g)