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
In the determination of iron in pharmaceutical preparations In the determination of iron in pharmaceutical preparations
Iron (III) ions form a deep-coloured complex with a maximum absorption at about 525nm; this complex is used as the basis for the photometric titration of iron(III) ion with standard EDTA solution.
By using scrap iron, you are not using iron which can be used elsewhere, like in buildings. It also saves money on sourcing and extracting new iron.
Yes. This is part of the process of extracting copper to sell.
The titration must be done in acidic medium to prevent the precipitate of Iron(III) as hydrated oxide (iron hydroxide). Iron (III) is an indicator.
A half cup of raw spinach has about 0.4 mg of iron and a half cup of cooked spinach has about 6.4 mg.
Spinach is naturally high in iron....so when Popeye ate spinach, he became stronger.
Spinach is rich in iron to start with.
cooked spinach
The blast furnace is the first step in extracting iron ore, this process produces pig iron. Pig iron has limited uses as is, so is shipped to steel mills for continued refinement.
Spinach is high in iron.
Spinach
Spinach
Spinach
Spinach
Spinach is noted for its iron content, and it gave Popeye incredible strength and stamina.
Leaves are eaten in spinach. These are fleshy, green and contain lots of iron.