Chapter 15, Problem 10SAQ

The solid XY decomposes into gaseous X and Y:

   $\text{XY}\left(s\right)\rightleftharpoons \text{X}\left(\text{g}\right)+\text{Y}\left(\text{g}\right)K_{\text{p}}=\text{ 4}.\text{1 }\left(\text{at }0°\text{C}\right)$

If the reaction is carried out in a 22.4-L container, which initial amounts of X and Y result in the formation of solid XY?

• 2.0 mol X, 2.0 mol Y
• 1 mol X; 1 mol Y
• 5 mol X; 0.5 mol Y
• none of the above