Introduction to Le Chatelier's Principle

AP Chemistry· difficulty 3/5

N2O4(g) <-> 2 NO2(g) (dH > 0) time T raised NO2 N2O4

Which statement is supported?

  • A

    Pressure was increased

  • B

    Equilibrium shifts forward; K increases with T (endothermic)

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  • C

    A catalyst was added

  • D

    K decreases with T

Explanation

For an endothermic reaction, raising T pushes equilibrium toward products, increasing K. The plot shows NO2 rising and N2O4 falling after the stress.

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