methods of salt preparation Flashcards
1
Q
insoluble salts
A
precipitation
2
Q
soluble salts
A
titration using acid & soluble carbonate,
titration using acid & alkali,
reaction of acid & excess insoluble base/carbonate,
reaction of acid & excess metal
3
Q
soluble starting materials
A
titration
4
Q
insoluble starting materials
A
reaction of acid with an insoluble substance
5
Q
use titration using acid & alkali when
A
cation of salt is ammonium or group I metal
6
Q
use titration using soluble carbonate when
A
a stable carbonate of the cation exists
note: aluminium and iron (III) carbonate are unstable
7
Q
use metal-acid reaction when
A
the cation reacts well with dilute acid
note: lead, copper & silver don’t as they are unreactive
8
Q
use insoluble base-acid reaction when
A
the cation
- is NOT ammonium or group I metal,
- does NOT exist as a stable carbonate
- does NOT react well with dilute acid
