AP Chemistryeasymcq1 pt
For the equilibrium PCl₅(g) ⇌ PCl₃(g) + Cl₂(g), increasing pressure by compression causes what?
A.Shift left toward PCl₅
B.Shift right toward PCl₃ + Cl₂
C.No shift
D.K decreases
Explanation
Core Concept
The product side holds 2 gas moles versus 1 on the left, so compression pushes the system toward the fewer-mole side — back to PCl₅.
Correct Answer
AShift left toward PCl₅
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