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Reaction Quotient and Le Chatelier's Principle

AP Chemistry· difficulty 4/5

For N2O4(g)⇌2NO2(g)N_2O_4(g) \rightleftharpoons 2NO_2(g), decreasing the container volume at constant temperature

  • A

    Has no effect on the position of equilibrium

  • B

    Changes K_p numerically

  • C

    Shifts equilibrium toward NO₂

  • D

    Shifts equilibrium toward N₂O₄ (fewer moles of gas)

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Explanation

Compression → higher P → system shifts to side with fewer moles of gas (1 mol N₂O₄ < 2 mol NO₂) to relieve pressure. K_p unchanged at constant T.

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