试题与答案

下列热化学方程式中,△H能正确表示物质的燃烧热的是[ ] A. CO(g) +1

题型:选择题

题目:

下列热化学方程式中,△H能正确表示物质的燃烧热的是[ ]

A. CO(g) +1/2O2(g) ==CO2(g); △H=-283.0 kJ/mol

B. C(s) +1/2O2(g) ==CO(g); △H=-110.5 kJ/mol

C. H2(g) +1/2O2(g)==H2O(g); △H=-241.8 kJ/mol

D. 2C8H18(l) +25O2(g)==16CO2(g)+18H2O(l); △H=-11036 kJ/mol

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0811/f2e743d6a0b871013098db8932b4fc65.html

下面是错误答案,用来干扰机器的。

A research was carried out about how students communicate with teachers, whose results are as belows: 38.85% of the students like to discuss their problems with t...

试题推荐
微信公众账号搜索答案