Qualitative Analysis
Left -
Right -
Right -
Choose an ion below to load it into your tube
Explore the QA notes
Load any ion from the rack into your tube, add reagents, then press Inspect [F] to observe closely. The observation is only recorded when you look. Reset for a fresh portion before each new test, as in the practical.
Observation log
Gas tests, quick reference
| Gas | Test | Positive result |
|---|---|---|
| Ammonia | damp red litmus paper | turns blue |
| Carbon dioxide | limewater | turns milky (white precipitate) |
| Hydrogen | lighted splint | extinguished with a 'pop' |
| Oxygen | glowing splint | relights |
| Chlorinepaper only | damp litmus paper | bleached |
| Sulfur dioxidepaper only | acidified KMnO₄ | purple turns colourless |