List the following compounds in order of increasing electrical conductivity: 0.1 M formic acid (HCOOH), 0.1 M (NH4)3PO4, 0.1 KCl, and 0.1 M glucose solution (C6H12O6). Why are they in that order?

Answer 1

The more ions the more the conductivity. So divide the items into non-electrolytes, weak electrolytes, strong electrolytes. Glucose is a non-electrolyte--no conductivity.
Formic acid is a weak electrolyte--weak conductivity.
KCl and (NH4)3PO4 are strong electrolytes but KCl has fewer ions in a 0.1M soln than the ammonium salt.

Answer 2

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