click below
click below
Normal Size Small Size show me how
IGCSE Analyzing
Testing ions and graphs
Test | Result |
---|---|
How do you test for Cu2+ ions? | Add NaOH -> blue precipitate (Cu(OH2) |
How do you test for Fe2+ ions? | Add NaOH -> green precipitate (Fe(OH2) |
How do you test for Fe3+ ions? | Add NaOH -> brown precipitate (Fe(OH3) |
How do you test for K+ ions? | Flame test -> lilac |
How do you test for Na+ ions? | Flame test -> orange/yellow |
How do you test for Li+ ions? | Flame test -> crimson |
How do you test for Ca2+ ions? | Flame test -> brick-red |
How do you test for NH4+ ions? | Add NaOH, warm and test with red litmus -> turns blue |
How do you test for CO3 2- ions? | Add nitric acid -> bubbles of CO2 |
How do you test for Cl- ions? | Add nitric acid and silver nitrate -> white precipitate (AgCl) |
How do you test for Br- ions? | Add nitric acid and silver nitrate -> cream precipitate (AgBr) |
How do you test for l- ions? | Add nitric acid and silver nitrate -> yellow precipitate (AgI) |
How do you test for SO4 2- ions? | Add barium nitrate -> white precipitate (BaSO4) |