Concentration Stress via Q vs. K
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
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.