Consider the Following System at Equilibrium at 25°C:PCl₃(g) + Cl₂(g)

Multiple Choice

Consider the following system at equilibrium at 25°C:PCl₃(g) + Cl₂(g) PCl₅(g)
for which ΔH° = -92.5 kJ at 25°C.
-When the volume is decreased at constant temperature, the ratio of the partial pressure of PCl₅ to the partial pressure of PCl₃ will

A) It is impossible to tell without more information.
B) decrease.
C) stay the same.
D) increase.