Home › AP Intermediate 2nd Year › Chemistry › Electrochemistry ›  For *strong* electrolytes, Λ_m varies with concentration as:
AΛ_m = Λ°_m − A × c^(1/2) (linear in √c)
BΛ_m is independent of concentration
CΛ_m varies steeply on dilution and only Kohlrausch's law gives Λ°_m
DΛ_m = Λ°_m × c
Answer & Solution
Correct answer: A. Λ_m = Λ°_m − A × c^(1/2) (linear in √c)
**Strong electrolytes** (NaCl, KCl): Λ_m varies slowly with dilution and obeys **Λ_m = Λ°_m − A √c** — a straight line whose y-intercept is Λ°_m. Weak electrolytes (acetic acid) rise steeply and Λ°_m must be obtained via Kohlrausch's law.
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