问题标题:
下面均是正丁烷与氧气反应的热化学方程式(25℃,101kPa):①C4H10(g)+13/2O2(g)==4CO2(g)+5H2O(l);△H=-2878KJ/mol②C4H10(g)+13/2O2(g)==4CO2(g)+5H2O(g);△H=-26
问题描述:

下面均是正丁烷与氧气反应的热化学方程式(25℃,101kPa):
①C4H10(g)+13/2O2(g)==4CO2(g)+5H2O(l);△H=-2878KJ/mol
②C4H10(g)+13/2O2(g)==4CO2(g)+5H2O(g);△H=-2658KJ/mol
③C4H10(g)+9/2O2(g)==4CO(g)+5H2O(l);△H=-1746KJ/mol
④C4H10(g)+9/2O2(g)==4CO(g)+5H2O(g);△H=-1526KJ/mol
由此判断,正丁烷的燃烧热是      
[    ]

A.2878KJ/mol
B.2658KJ/mol
C.1746KJ/mol
D.1526KJ/mol

顾学真回答:
  A
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