Conductance: specific, molar, equivalent
Electrochemistry · Chemistry
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A 0.01 M KCl solution has κ = 0.00141 S/cm. Find Λ_m. Step 1: Λ_m = κ × 1000/M = 0.00141 × 1000/0.01. Step 2: = 141 S·cm²/mol. Step 3: Compare with Λ°_m(KCl) = 149.9 — close, KCl nearly fully ionised. Step 4: For acetic acid Λ_m << Λ°_m → α = Λ_m/Λ°_m gives dissociation. Conductance measures ions actually present.