Solutions + Other - Cation Flashcards
1
Q
Cu 2+
A
Blue ppt. in NaOH
2
Q
Fe 2+
A
Green ppt. in NaOH
3
Q
Fe 3+
A
Brown ppt. in NaOH
4
Q
NH 4+
A
(NH4+ + NaOH = NH3+) turns damp red litmus paper blue
5
Q
ppt. Cation Method
A
add a few drops of NaOH (sodium hydroxide) - causes colour change
