Summary of Observations for Chemical Tests

Notes summarising chemical tests observation

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Summary of Observations
Halides
Fluoride Chloride Bromide Iodide
Acidified Silver
No precipitate White precipitate Cream precipitate Yellow precipitate
Nitrate (AgNO3)
Then... dilute
No visible change Precipitate dissolves No visible change No visible change
aqueous ammonia
Then... concentrated
No visible change Precipitate dissolves Precipitate dissolves No visible change
aqueous ammonia
Yellow/brown Brown solution
Aqueous chlorine No change No change
solution and/or black ppt
Brown solution
Aqueous bromine No change No change No change
and/or black ppt
Aqueous iodine No change No change No change No change
Organic Chemistry
Unsaturated
Primary Secondary Tertiary Carboxylic
Aldehyde Ketone organic
alcohol alcohol alcohol acid
molecules
Acidified Turns from Turns from
Stays
potassium orange to orange to X X
orange
dichromate green green
Fehling's Brick-red
X X X Stays blue
Reagent precipitate
Tollens' Silver mirror Stays
X X X
Reagent formed colourless
Sodium
hydrogen- Fizzes
carbonate
Decolourises
Bromine
bromine
water
water

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