General Test Procedure 0.1M Ammonium Thiocyanate
- Purpose
- This procedure is applicable for the preparation and standardization of 0.1M Ammonium thiocyanate.
- Apparatus
- 1000 ml Volumetric Flask
- 250 ml conical flask
- Reagents
- Ammonium thiocyanate
- Silver nitrate
- Nitric acid
- Ferric ammonium Sulphate solution
- Procedure
- Molecular Formula : NH4SCN
- Molecular weight : 12
- Dissolve 7.612 g of Ammonium thiocyanate in sufficient water & dilute to 1000ml with water.
- Standardize the solution in following manner :-
Pipette 30.0 ml of 0.1M silver nitrate into a glass-stoppered flask, dilute with 50 ml of water, add 2
ml of nitric acid and 2 ml of ferric ammonium sulphate solution and titrate with the ammonium
thiocyanate solution to the first appearance of a red-brown color. Each ml of 0.1M silver nitrate is
equivalent 0.007612 g of NH4SCN.
- Expiry period of the solution: 15 days from the date of preparation.
Where,
V = Volume consumed of 0.1M Ammonium thiocyanate solution.
M = Actual Molarity of 0.1M Silver Nitrate solution
W = Weight of the Ammonium thiocyanate used to make solution in 1000ml
- Reference
- IP
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General Test Procedure 0.1M Ammonium Thiocyanate