First slide
Kohlraush law
Question

Calculate the limiting molar conductivity of NaCl and KBr from the above table
 

IonΛS cm2mol1IonΛS cm2mol1
H+349.6OH-199.1
Na+50.1CI-76.3
K+73.5Br-78.1
Ca2+119.0CH3COO-40.9
Mg2+106.0SO42-160.0

Moderate
Solution

ΛNaCl=50.1+76.3=126.4S cm2mol1ΛKBr=73.5+78.1=151.6S cm2mol1

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