题干

在1200℃时,天然气脱硫工艺中会发生下列反应:

H2S(g)+

3
2
O2(g)═SO2(g)+H2O(g)△H1

2H2S(g)+SO2(g)═

3
2
S2(g)+2H2O(g)△H2

H2S(g)+

1
2
O2(g)═S(g)+H2O(g)△H3

2S(g)═S2(g)△H4

则△H4的正确表达式为(   )

A:△H4= 23 (△H1+△H2﹣3△H3

B:△H4= 23 (3△H3﹣△H1﹣△H2

C:△H4= 32 (△H1+△H2﹣3△H3

D:△H4= 32 (△H1﹣△H2﹣3△H3

上一题 下一题 0.0难度 选择题 更新时间:2020-01-14 09:11:11

答案(点此获取答案解析)

A

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