AP Chemistrymediummcq1 pt
For H₂(g) + I₂(g) ⇌ 2HI(g), how does pressure affect the equilibrium position?
A.No shift — gas moles are equal on both sides
B.Shifts toward HI
C.Shifts toward H₂ and I₂
D.Pressure doubles K
Explanation
Core Concept
Two gas moles react to form two gas moles, so compression changes all concentrations equally and Q stays at K. Only unequal mole counts respond to pressure.
Correct Answer
ANo shift — gas moles are equal on both sides
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