How do I standardize a solution of potassium manganate(VII) by an iron(II) salt (ammonium iron(II) sulphate)?
Ulex says You make up a solution of the iron(II) salt by accurate weighing and using a standard volumetric flask. Arrange to have the concentration of the iron(II) salt about 5 times that of the potassium manganate(VII). The molar mass is on the bottle label. In making up the solution to the mark, include a generous proportion of 1 M sulphuric acid. Titrate portions of the iron(II) solution (pipette) with your potassium manganate(VII) solution. The titration is self-indicating. Calculate the concentration of your potassium manganate(VII) from the fact that 1MnO4- is equivalent to 5Fe2+ Always carry out a risk assessment and check with your teacher before starting any practical work. Risk assessment Before attempting any practical work based on the advice and suggestions on this website, you must do the following. Identify any hazards, assess the risks from these hazards, and then decide appropriate control measures to reduce the risks. You must have these approved by those in authority
Related Questions
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- How do I standardize a solution of potassium manganate(VII) by an iron(II) salt (ammonium iron(II) sulphate)?
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