What are the procedures for extracting iron from spinach titration?

Answer 1

1. wiegh approximately 15g of spinach

2. using scissors, cut the leaves into small pieces and place in a 250cm3 beacker ( if frozen simply place in beacker)

3. using a measuring cylinder, add 50cm3 1.0 moldm-3 sulphuric acid ( CARE irritant) and boil the mixutre gently for 5 mins

4. allow mixture to cool then filter it, using a buchner funnel and vacuum filtration . wash the residue in the funnel one with a little distilled water to collect all the filtrate

5. pour all the filtrate and washing s into a 100cm3 volumetric flask. make up to 100cm3 with 1.0moldm-3 sulphuric acid. stopper the flask and shake it well.

6. fill the burette with potassium manganate (VII) solution (CARE stains cloths)

7. using a pippette transfer 10cm3 of the spinach extract solution to the 250cm3 conical flask and add 50cm3 of 1.0 moldm03 potassium manganate (VII) solution from the burrette until pink colour persists for 30 seconds.

lol i hope that helps lol

Answer 2

To extract iron from spinach, the leaves need to be boiled in acid to release the iron ions. The solution is then filtered to remove solid particles and the iron content is determined via titration with a known concentration of a chelating agent like EDTA. The endpoint of the titration is reached when the chelating agent binds to all the iron ions, forming a colored complex.