Chapter 13, Problem 40E

The equilibrium constant is 0.0900 at 25°C for the reaction

${\text{H}}_2\text{O}\left(g\right)+{\text{Cl}}_2\text{O}\left(g\right)\rightleftharpoons 2\text{HOCl}\left(g\right)$

  For which of the following sets of conditions is the system at equilibrium? For those that are not at equilibrium, in which direction will the system shift?

  a. $P_{{\text{H}}_{\text{2}}\text{O}}=1.00\text{atm},P_{{\text{Cl}}_{\text{2}}\text{O}}=1.00\text{atm},P_{\text{HOCl}}=1.00\text{atm}$

  b. $P_{{\text{H}}_{\text{2}}\text{O}}=200.\text{torr},P_{{\text{Cl}}_{\text{2}}\text{O}}=49.8\text{torr},P_{\text{HOCl}}=21.0\text{torr}$

  c. $P_{{\text{H}}_{\text{2}}\text{O}}=296\text{torr},P_{{\text{Cl}}_{\text{2}}\text{O}}=15.0\text{torr},P_{\text{HOCl}}=20.0\text{torr}$