Why do I find Reaction of Halogens so hard

char1219

I am struggling with all the tests on halogens/Identification on halide any advice?
(I am doing OCR Chemistry A)

Reply 1

username5887583

sorry not sure, try it may help you a bit: https://www.science-revision.co.uk/A-level_the_halogens.html

Reply 2

charco

Study Forum Helper

Original post by char1219

I am struggling with all the tests on halogens/Identification on halide any advice?
(I am doing OCR Chemistry A)

The link below is useful for reaction of the halogens, but not identification of halide ions.

The test is to add silver nitrate solution to a solution of the halide ions.

Iodide ions give a yellow precipitate of silver iodide (that darkens on exposure to light)
Bromide ions give a creamy (off-white) ppt. of silver bromide
Chloride ions give a white ppt. of silver chloride that is soluble in ammonia solution
Fluoride ions do not give a ppt.

Reply 3

Pigster

Original post by char1219

I am struggling with all the tests on halogens/Identification on halide any advice?
(I am doing OCR Chemistry A)

What do you mean by "all the tests on halogens"? There aren't many.

All there are on OCR A are the redox reactions on addition of one halogen to another halide, with the associated colours of the halogens in aqueous and organic solvent.

Then with halides, it is just the colours on addition of AgNO3, and the solubility of precipitates in ammonia solution.

You don't even need to know about fluorine/fluoride.