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

Consider the following system at equilibrium at 25°C:
PCl₃(g) + Cl₂(g) PCl₅(g)
for which $\Delta$ H° = -92.5kJ 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) increase
B) decrease
C) stay the same
D) impossible to tell without more information
E) none of these