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Current in metals (class I conductors) is coordinated flow of electrons, while in

electrolytes (class II conductors – it is flow of ions. What

phenomenon is responsible for the

current flow across the metal/solution

interface?

This cell is known as a Daniell cell (after its inventor). In electrochemistry

both processes, i.e., reduction and oxidation, are separated in space

and the electrons flow from their donor (the reductant) to their

acceptor (the oxidant) via an external circuit.

Variable capacity mus be added when AC is employed to balance the phase

shift in the two branches of the Wheatsone bridge.

KCl may be easily purified.

Practical formula allows for conductivity in S/cm and concentration in

moles/dm3.

The data suggest a different mechanism of conductance in the case of the two

ions.

Dicarboxylic acid: e.g. Oxalic acid (COOH)2.

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