AS Organic Tests
Appearance and Observe colour and Colourless liquid w. Possibly an alcohol
smell state: smell characteristic -Possibly a
cautiously spirit/alcohol smell carboxylic acid
-Colourless liquid
with a sharp irritating
smell
Miscibility or Add a few cm3 of Mixes with water/ Polar/hydrogen
solubility in water the deionised water one layer bond/ possibly
Testing for polarity in a test tube alcohol or
in the liquid carboxylic acid
Combustion Place a few drops of Clean blue flame Low carbon content
Testing for carbon the liquid on a Sooty yellow/orange (alcohol)
content watch glass and flame High carbon
ignite with a lit content
splint (alkane/alkene)
Bromine water Add a few cm3 of Two layers form. C=C present
Testing for presence bromine water to Bromine water
of C=C the liquid/solution changes from yellow/
in a test tube orange/brown to
colourless
Silver Nitrate Add 1cm3 of the White precipitate Chloroalkane
solution with halogenoalkane to a Cream precipitate Bromoalkane
ethanol few cm3 of ethanol: Yellow precipitate Iodoalkane
Testing for presence add silver nitrate
of halogen atoms in solution and warm
a halogenoalkane in a water bath
PCL5 testing for an To a few cm3 of the Misty fumes, solid Alcohol/OH group
OH group liquid add a few disappears, white present, HCL gas
crystals of PCl5 smoke with conc. released, with
Test any gas ammonia solution smoke is NH4Cl
evolved with a glass
rod dipped in conc.
ammonia (NH3)
solution
Acidified potassium Mix a few cm3 of Orange solution Primary or
dichromate testing the liquid or sol. changes to green, secondary alcohol
for With acidified change in smell
primary/secondary potassium
alcohol as opposed dichromate solution
to tertiary alcohol in a test tube and
warm in a water
bath
Appearance and Observe colour and Colourless liquid w. Possibly an alcohol
smell state: smell characteristic -Possibly a
cautiously spirit/alcohol smell carboxylic acid
-Colourless liquid
with a sharp irritating
smell
Miscibility or Add a few cm3 of Mixes with water/ Polar/hydrogen
solubility in water the deionised water one layer bond/ possibly
Testing for polarity in a test tube alcohol or
in the liquid carboxylic acid
Combustion Place a few drops of Clean blue flame Low carbon content
Testing for carbon the liquid on a Sooty yellow/orange (alcohol)
content watch glass and flame High carbon
ignite with a lit content
splint (alkane/alkene)
Bromine water Add a few cm3 of Two layers form. C=C present
Testing for presence bromine water to Bromine water
of C=C the liquid/solution changes from yellow/
in a test tube orange/brown to
colourless
Silver Nitrate Add 1cm3 of the White precipitate Chloroalkane
solution with halogenoalkane to a Cream precipitate Bromoalkane
ethanol few cm3 of ethanol: Yellow precipitate Iodoalkane
Testing for presence add silver nitrate
of halogen atoms in solution and warm
a halogenoalkane in a water bath
PCL5 testing for an To a few cm3 of the Misty fumes, solid Alcohol/OH group
OH group liquid add a few disappears, white present, HCL gas
crystals of PCl5 smoke with conc. released, with
Test any gas ammonia solution smoke is NH4Cl
evolved with a glass
rod dipped in conc.
ammonia (NH3)
solution
Acidified potassium Mix a few cm3 of Orange solution Primary or
dichromate testing the liquid or sol. changes to green, secondary alcohol
for With acidified change in smell
primary/secondary potassium
alcohol as opposed dichromate solution
to tertiary alcohol in a test tube and
warm in a water
bath
