Transition metals colours Flashcards
1
Q
state the test and observations for CO32- ions
A
- add dilute strong acid
- lime water turns cloudy (effervescences)
2
Q
state the test and observations for Cl-, Br- and I- ions
A
- add nitric acid, then silver nitrate solution
- precipitate: white, cream yellow
3
Q
state the test and observations for SO42- ions
A
- add dilute strong acid, Ba(NO3)2 (aq)
- white precipitate
4
Q
state the test and observations for NH4+ ions
A
- add NaOH, warm. Hold damp litmus over
- positive=paper turns blue
5
Q
state the test and observations for Cu2+ ions
A
- NaOH
- blue preciptate
6
Q
state the test and observations for Fe2+ ions
A
- NaOH
- green precipitate
7
Q
state the test and observations for Fe3+ ions
A
- NaOH
- orange precipitate
8
Q
state the test and observations for Mn2+ ions
A
- NaOH
- pink precipitate
9
Q
state the test and observations for Cr3+ ions
A
- NaOH
- grey/green precipitate
