Chapter 20, Problem 10E

At $65°C$ , the half-life for the first-order decomposition of ${\text{N}}_{\text{2}}{\text{O}}_{\text{2}}\left(\text{g}\right)$ is 2.38 min.

${\text{N}}_{\text{2}}{\text{O}}_{\text{5}}\left(\text{g}\right)\to 2{\text{NO}}_{\text{2}}\left(\text{g}\right)+\frac{1}{2}{\text{O}}_{\text{2}}\left(g\right)$

If 1.00 g of ${\text{N}}_{\text{2}}{\text{O}}_{\text{2}}$ is introduced into an evacuated 15L flask at $\text{65}°\text{C}$ ,

a. What is the initial partial pressure, in mmHgm of ${\text{N}}_{\text{2}}{\text{O}}_{\text{2}}\left(\text{g}\right)$?

b. What is the partial pressure, in mmHg, of ${\text{N}}_2{\text{O}}_{\text{3}}\left(g\right)$ after 2.38 min?

c. What is the total gas pressure, in mmHg, after 2.38 min?