Tests For Ions Flashcards
1
Q
Ammonium
A
Test: add sodium hydroxide, warm, test with ted litmus paper
Result: red litmus paper turns blue (ammonia gas produced)
2
Q
Copper
A
Test: add sodium hydroxide
Result: light blue precipitate (copper hydroxide)
Cu2+ + 2OH- -> Cu(OH) 2
3
Q
Iron Fe2+
A
Test: add sodium hydroxide
Result: green precipitate (iron hydroxide)
4
Q
Iron Fe3+
A
Test: add sodium hydroxide
Result: red brown precipitate
5
Q
Aluminium Al+
A
Test: add sodium hydroxide
Result: white precipitate
Al3+ + 3OH- -> Al(OH)3
6
Q
Lithium flame colour
A
Red
7
Q
Potassium flame colour
A
Lilac
8
Q
Sodium flame colour
A
Yellow
