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Chemical required:
1) Calcium chloride
2) Magnesium Sulphate
3) Ferric Chloride
4) Di Potassium Hydrogen Phosphate
5) Potassium Di Hydrogen Phosphate
6) Di Sodium Hydrogen Phosphate
7) Ammonium Chloride
8) Manganous Sulphate
9) Potassium hydroxide
10) Potassium iodide
11) Sodium azide
12) Concentrated Sulphuric acid
13) Starch indicator
14) Sodium thiosulphate
15) Distilled or deionized water
Procedure:
Preparation of reagents
 Dissolve Manganese Sulphate (480g of MnSO4.4H2O / 400g of MnSO4.4H2O / 360g of
MnSO4.4H2O) in freshly boiled and cooled distilled water, filter the solution and make
up to 1000ml (1litre). In this experiment, we are using Manganese Sulphate Mono
hydrate.
 Take 364g of Manganese Sulphate Mono hydrate (MnSO4.4H2O) and transfer it to the
beaker. To dissolve the content, place it in the magnetic stirrer.
 The solution should not give blue colour by addition of acidified potassium iodide
solution and starch.
Alkaline Iodide Sodium Azide Solution
 To prepare this reagent we are going to mix three different chemicals, dissolve either
500g of Sodium Hydroxide (or) 700g of Potassium Hydroxide and 135g of Sodium
Iodide (or) 150g of Potassium Iodide.
Department of Civil Engineering – SNS College of Engineering
Manganous Sulphate Solution
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