Chemistry-
General
Easy
Question
Which respresent an exothermicre action-
- 2HgO(s)+180KJ→2Hg(
)+O2(s)
- N2O(g)+C(s)→CO(g)+N2(g)–131KJ
- N2(g)+O2(s)→2NO(g);ΔE=+181KJ
- C2H2(g)+2H2(g)→C2H6(g);ΔE=–314KJ
)+O2(s)
The correct answer is: C2H2(g)+2H2(g)→C2H6(g);ΔE=–314KJ
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