✅Determination of the amount of Iron in an Iron Tablet

Why might someone need to take an iron treatment?

to treat an iron deficiency such as anaemia

Why must KMnO₄ be standardised immediately before this titration?

• it is not a primary standard

• is unstable and is decomposed by the presence of light and heat

What can be used to standardise KMnO₄?

hydrated ammonium iron (II) sulfate

How do you prepare the iron tablet solution?

• 5 dry iron tablets are ground up in a pestle and mortar

• some dilute sulfuric acid is added to make it easier to grind them

• the paste is added to a clean, dry beaker adding washings from the pestle and mortar using deionised water…

What causes a cloudy appearance in the solution?

the outer coating of the tablets which is there to minimise stomach irritation

Why is sulfuric acid added to the conical flask?

to ensure sufficient H+ ions for Mn⁺⁷ ions to be reduced to Mn⁺² ions