Zusammenfassung der Ressource
Chemistry EMPA
- Inorganic Tests
- Nitrates
- add Fe(II) Chloride + c. sulfuric acid
- no brown ring
- brown ring if nitrate present
- Halide Ions
- add silver nitrate + nitric acid
- CL-, white ppt
- Br-, cream ppt
- I-, yellow ppt
- add Ammonia
- Cl-, redissolves w/ dilute
- Br-, redissolves w/ conc.
- I-, doesn't dissolve
- Sulfate Ions
- add acid to remove carbonate ions
- add barium nitrate or chloride
- white ppt
- n.v.c
- Flame Tests
- Cu, blue-green
- Na, yellow
- Sr, scarlet
- K, lilac
- Ba, apple-green
- Ca, brick-red
- Ammonium Ions
- heat w/ NaOH
- ammonia gas produced, v. smelly
- Organic Tests
- Halogenoalkanes
- heat with NaOH
- Phenols
- reagent X a.k.a Fe(III) Chloride
- yellow > purple
- Fe(III) Chloride is a
yellowish solution
- Fehling's/ Benedict's
- Aldehydes, red-brick ppt
- Tollen's [Ag(NH3)2]+
- Aldehydes, silver mirror or black ppt
- Acidified potassium dichromate
- primary or secondary alcohols or aldehydes,
orange > green
- Brady's
- aldehyde or ketone,
orange solution
- Bromine Water
- alkene, brown > colourless
- Sodium hydrogencarbonate
- acid, effervescence
- gas turns lime water cloudy
- Transition Metals
- Aspirin