Testing for halides

What do you add to test fro halides

Silver nitrate- AgNO3

What’s the second thing to add to test for halides

Dilute nitric acid

Why do you add dilute nitric acid

Acidifies solution and prevents precipitation of other salts which would produce false negative

What’s the third thing to add

Dilute ammonia solution

Complete steps

Acidify solution with dilute nitric acid, add a few drops of sliver nitrate solution, treat any precipitate with dilute ammonia solution, if precipitate still exists add concentrated ammonia

What coloured precipitate is formed when nitric acid and silver nitrate is added to chlorine

White

What coloured precipitate is formed when nitric acid and silver nitrate is added to Bromine

Cream

What coloured precipitate is formed when nitric acid and silver nitrate is added to Iodine

Yellow

What precipitate is formed with chlorine

AgCl

What precipitate is formed with bromine

AgBr

What precipitate is formed with iodine

AgI

Is chlorine soluble is dilute ammonia

Yes

Is bromine soluble in dilute ammonia

No

Is bromine soluble in concentrated ammonia

Yes

Is iodine soluble in dilute ammonia

No

Is iodine solubl in concentrated ammonia

No

Generic equation for halide test

Ag+ (aq) + x- (aq) → AgX (s)