Tollens' Reagent
Tollens' reagent
is usually ammoniacal silver nitrate, but can also be other things, as long as there is an aqueous
diammide silver
complex
.
Uses
The
diammide silver
complex
is an
oxidising agent
, which is itself
reduced
to
silver
metal
, which in a clean glass reaction vessel forms a 'silver mirror'. This feature is used as a test for
aldehydes
, which are oxidised to
carboxylic acids
. Once it has been identified that there is a
carbonyl group
on the
organic molecule
using
2,4-dinitrophenylhydrazine
(also known as
Brady's reagent
), Tollens' reagent can be used to ascertain whether the compound is a
ketone
or an
aldehyde
.
Laboratory Preparation
To aqueous
silver nitrate
, add either dilute
sodium hydroxide
or
ammonia
until the precipitate that forms just dissolves.
*This is ammoniacal silver nitrate,
Ag(NH
3
)
2
NO
3
(aq).
<< Previous
Word Browser
Next >>
the power and the glory (movie)
jorge newbery
hong kong link
kansei nakano
classic metal
mbm engineering college
joseph bonomi the elder
tony brown
stylized facts
jan nowak
konstanty adam czartoryski
kestell
narew ostroęka
ladybrand
lindley, free state
chukyo tv. broadcasting
deepcut barracks
marquard
dilao
jan nowak jezioranski
glyder
ezra l'hommedieu
memel, free state
head lake
paul roux
petrus steyn
tell all your friends
wineberry
queerid
reitz
welsh 3000s
low insertion force
rosendal
oxoglutarate dehydrogenase
panfilo de narvez
stre
andrew dobson
senekal
steynsrus
salomon islands
tweespruit
three brothers
sheila rowbotham
vrede
Copyright 2005-2009 OnPedia.com. All Rights Reserved