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Determination of Faraday's constant

Determination of Faraday's constant

Item no.: P3062101

Experiment Type: Teacher Experiment, Laboratory Experiment

Difficulty Expenditure of Time print
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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

 

Document     Filesize
p3062101e.pdf Experiment guide, English 301.81 KB

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