家用液化气中主要成分之一是丁烷。在101 kPa时,10 kg丁烷完全燃烧生

家用液化气中主要成分之一是丁烷。在101 kPa时,10 kg丁烷完全燃烧生成CO2和H2O(l)放出热量5×105 kJ丁烷的燃烧热为        ,丁烷燃烧的热化学方程式为     

答案

解析:10 kg丁烷的物质的量==172.41 mol,则丁烷的燃烧热==2900 kJ·mol-1

答案:2900 kJ·mol-1

C4H10(g)+O2(g)4CO2(g)+5H2O(l);ΔH=-2900 kJ·mol-1

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