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 |
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A.2878KJ/mol B.2658KJ/mol C.1746KJ/mol D.1526KJ/mol |
顾学真回答:
A
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