An important reaction that takes place in the atmosphere is NO2(g) −→ NO(g) + O(g), which is brought about by sunlight.

Calculate the standard enthalpy of the reaction from the following information

O2(g) −→ 2 O(g) ∆H◦ = 498.4 kJ

NO(g) + O3(g) −→ NO2(g) + O2(g) ∆H◦ = −200 kJ

The standard enthalpy of formation for ozone is 142.7 kJ.

1.) 306.5 kJ

2.) 449.2 kJ

3.) 963.8 kJ

4.) 320.2 kJ

5.) 555.7 kJ

6.) 820.5 kJ

7.) 106.5 kJ