QA Flashcards
1
Q
Fe2+ ion
A
- green ppt
- insoluble in both grp 1 hydroxide and NH3 (aq)
2
Q
Fe3+ ion
A
- brown ppt
- insoluble in both grp 1 hydroxide and NH3 (aq)
3
Q
Cu2+ ion
A
- blue ppt
- insoluble in grp 1 hydroxide
- soluble in NH3 (aq) to form a dark blue sol
4
Q
Ca2+ ion
A
- white ppt
- insoluble in grp 1 hydroxide
- no observation in NH3 (aq)
5
Q
Zn2+ ion
A
- white ppt
- soluble in both grp 1 hydroxide and NH3 (aq)
6
Q
Al3+ ion & Pb2+
A
- white ppt
- soluble in grp 1 hydroxide
- insoluble in NH3 (aq)
