注:BTB是溴麝香草酚蓝的简称,BTB的颜色为蓝色,遇二氧化碳后会变成黄色。
阅读理解。读文章,判断正(正确)误(错误)
Tomorrow will be Sunday. My friends and I will do lots of things. Mike will go fishing with his grandpa. Mary will go shopping with her mum. Bob will play football. Jim likes swimming. He will go swimming. I'm going to visit the Great Wall. I will take some photos.
CO2(g)+C(s)=2CO(g)△H2
2CO(g)+O2(g)=2CO2(g)△H3
4Fe(s)+3O3(g)=2Fe2O3(s)△H4
3CO(g)+Fe2O3(s)=3CO2(g)+2Fe(s)△H5
下列关于上述反应焓变的判断正确的是( )