AP Chemistrymediummcq1 pt
When can x be neglected in an equilibrium denominator like (0.10 − x)?
A.When K is very small
B.When K is very large
C.Never
D.When the reaction is endothermic
Explanation
Core Concept
A tiny K means x is negligible next to the initial concentration (typically if x < 5% of it). The simplification skips the quadratic and is checked afterward.
Correct Answer
AWhen K is very small
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