How do you make 0.1 M ammonium thiocyanate?

Ammonium Thiocyanate (0.1 M) 

Molecular formula: NH4SCN 

Molecular weight: 76.12 

Preparation: Dissolve 7.612 g of ammonium thiocyanate in sufficient water to produce  1000 mL. 

Standardization: Pipette 30.0 mL of 0.1 M 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 sulfate solution, and titrate with the NH4SCN solution to the first appearance of a red-brown color. 


AgNO3 + NH4SCN → AgSCN↓ + NH4NO3 

NH4SCN + Fe+3 → [FeSCN]+2 + NH4 

Factor Calculation: 

1 mole of NH4SCN ≅ 1 mole of silver nitrate 

1000 mL of 1M NH4SCN ≅ 169.87g of AgNO3 

1 mL of 0.1 M NH4SCN ≅ 0.01698 g of AgNO3

Make sure you also check our other amazing Article on : How 0.1 M ceric ammonium nitrate is prepared?
Sharing Is Caring:

Leave a Comment