Redox Volumetric Titration: Cerimetry with Cobra4

Principle

Potassium permanganate solutions which are used as oxidizing measuring solutions in redox titrations can in most cases be replaced by Ce(IV) solutions. These offer the advantages that they do not change on storage and that the course of the redox titration can be very conveniently followed by measuring the electrochemical potential. The equivalent point can then be found by determination of the inflection point of the potential curve which results from plotting the measured values.

Tasks

Titrate Iron(II) sulphate solution with Ce(IV) sulphate solution.

What you can learn about

• Redox titration
• Iron(II) sulphate
• Ce(IV) sulphate
• Titration
• Cerimetry

Benefits

• Drop counter optimizes the experimental procedure
• Simplified implementation: all pre-settings already prepared
• Extensive automation of the experiment allows concentration on the learning objectives

Necessary accessories

• Precision balance 6200g/0.01g

Software provided. Computer not included.