Recently Added Formulas in Chemistry

· Limit Test of Arsenic
· Limit Test of Lead
· Limit Test of Heavy Metals
· Limit Test of Iron
· Limit Test of Sulphate

Additional Formulas

· Definition of Limit Tests
· Limit Test of Chloride
· Limit Test of Sulphate
· Limit Test of Iron
· Limit Test of Heavy Metals
· Limit Test of Lead
· Limit Test of Arsenic

Current Location > Formulas in Chemistry > Limit test > Limit Test of Chloride

Limit Test of Chloride

Principle:

Limit test of chloride is based on the reaction of soluble chloride with silver nitrate in presence of dilute nitric acid to form silver chloride, which appears as solid particles (Opalescence) in the solution.

Procedure:

Test sample	Standard compound
Specific weight of compound is dissolved in water or solution is prepared as directed in the pharmacopoeia and transferred in Nessler cylinder	Take 1ml of 0.05845 % W/V solution of sodium chloride in Nessler cylinder
Add 1ml of nitric acid	Add 1ml of nitric acid
Dilute to 50ml in Nessler cylinder	Dilute to 50ml in Nessler cylinder
Add 1ml of AgNO₃ solution	Add 1ml of AgNO₃ solution
Keep aside for 5 min	Keep aside for 5 min
Observe the Opalescence/Turbidity	Observe the Opalescence/Turbidity

Observation:

The opalescence produce in sample solution should not be greater than standard solution. If opalescence produces in sample solution is less than the standard solution, the sample will pass the limit test of chloride and visa versa.

Reasons:

Nitric acid is added in the limit test of chloride to make solution acidic and helps silver chloride precipitate to make solution turbid at the end of process.