Chimactiv - Interactive numerical educational resources for the analysis of complex media

How to use a conductivity meter

Introduction
A little theory
THE CONDUCTIVITY METER
Experimental procedure
Illustrating theory
Get some practice
To find out more

Quiz: What do you remember?

The relation between the conductivity σ and the conductance G is:

σ = kG with k a constant
σ = k + G with k a constant
σ = k.exp(-G/RT) with k a constant, R the gas constant and T the temperature

Conductivity of pure water is:

0,00 S.cm^-1
0,05 µS.cm^-1
0,05 mS.cm^-1

The Grotthuss mechanism explains the high conductivity of the ions:

H⁺ and HO^-
Halides I^-, Cl^- , Br^- et F^-
Alkali Na⁺, K⁺, Li⁺

In conductivity, the calibration phase is:

Mandatory in every case
Recommended but not mandatory in every case
Recommended in some cases of titration
Mandatory in the case of a titration

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