Chemistry / Chem 1783 · Atom · ~20 seconds
Concentration Stress via Q vs. K
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State
Adding a species lowers Q if in the denominator, or raises Q if in the numerator, and the system shifts to restore Q to K.
Show
Adding H2 to H2 + I2 ⇌ 2 HI drops Q below K, so the reaction consumes H2, forming HI.
Watch for
Removing a species reverses the shift adding it causes; predicting the same direction is a slip.