Question

which appartus performing for the limit test for areseni​

Answer 1

Explanation:

Limit test of Arsenic is based on the reaction of arsenic gas with hydrogen ion to form yellow stain on mercuric chloride paper in presence of reducing agents like potassium iodide. It is also called as Gutzeit test and requires special apparatus.

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Pharmaceutical Importance and Significance of Lim

Answer 2

Answer:

All reagents used for the test should have as low a content of arsenic as possible. The apparatus (Fig.) consists of a 100-ml bottle or conical flask closed with a rubber or ground glass stopper through which passes a glass tube (about 20 cm x 5 mm).