# Given the following reactions the enthalpy of reaction for 2N2O(g) --> 2NO(g) +N2(g) is __________ kJ? N2 (g) + O2(g) --> 2NO(g) ΔH = +180.7 kJ 2N2O(g) --> O2 (g) + 2N2(g) ΔH = -163.2 kJ

##### 1 Answer

May 26, 2017

17.5 KJ

#### Explanation:

In all this kind of problems the first step is to balance the equations, in this case this is a very simple one, because if you add the two equations without any change you would obtain the asked one.

(1)

(2)

(3)

then

as