Chapter 14, Problem 91RQ

Two 1.00 L bulbs are filled with 0.500 atm of ${\text{F}}_{\text{2}}\left(g\right){\text{ and PF}}_{\text{3}}\left(g\right)$, respectively, as illustrated in the accompanying figure. At a particular temperature, $K_{\text{P}}=4.0$

for the reaction of these gases to form

${\text{F}}_{\text{2}}\text{(}g{\text{)+ PF}}_{\text{3}}\left(g\right)\stackrel{}{\rightleftharpoons }{\text{ PF}}_5\left(g\right)$

The stopcock between the bulbs is opened and the pressure falls. Make a sketch of this apparatus showing the gas composition once the pressure is stable.

List any chemical reactions that continue to occur once the pressure is stable.

Suppose all the gas in the left bulb is forced into the bulb on the right and then the stopcock is closed. Make a second sketch to show the composition of the gas mixture after equilibrium is reached.

Comment on how the composition of the one-bulb system differs from that for the two-bulb system.