Chapter 8, Problem 97E

Hydrogen azide, HN₃, decomposes on heating by the following unbalanced equation:

${\text{HN}}_{\text{3}}\text{O}\left(g\right)\to {\text{ N}}_{\text{2}}\left(g\right)+{\text{ H}}_{\text{2}}\left(g\right)$

If 3.0 atm of pure HN₃(g) is decomposed initially, what is the final total pressure in the reaction container? What are the partial pressures of nitrogen and hydrogen gas? Assume the volume and temperature of the reaction container are constant.