Principle

Faraday’s laws of electrolysis describe the correlation between the amounts of substances transformed in the reactions at the electrodes and the charge applied (amount of electricity). Faraday’s constant, which appears as a proportionality factor, can be determined experimentally from the dependence.

Benefits


Standard experiment in introductory physics and chemistry

Failsafe and elegant determination of an important natural constant

Excellent for the introduction of refractometry


Tasks

Determine Faraday’s constant from the dependence of the volumes of hydrogen and oxygen envolved on the charge applied in the hydrolysis of dilute sulphuric acid.

What you can learn about


Electrolysis coulometry

Charge

Faraday’s laws

Avogadro’s number

General equation of state for ideal gases


Necessary accessories


Precision balance 620g/0.001g