February 26, 2017

Homework Help: Chemistry

Posted by Fiona on Monday, April 30, 2007 at 12:37am.

for the reaction

4NH3(g) + 5O2(g) <--> 4NO(g) + 6H2O(g)

if H = -950kJmol-1, does that mean it's an exothermic reaction?

Ooops pressed Post too quickly.

Yes it is exothermic. Delta H is negative so heat is lost from the system. If delta H is positive a reaction is endothermic as it is gaining heat.

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