tests for unknown ions Flashcards
1
Q
flame tests
A
LITHIUM - pink SODIUM - yellow POTASSIUM - lilac CALCIUM - orange-red COPPER - blue
2
Q
sodium hydroxide precipitate test
A
ALUMINIUM - white CALCIUM - white COPPER - blue IRON (II) - green IRON (III) - brown AMMONIUM - gas formed, then turns damp red litmus paper blue
3
Q
carbonate anion test
A
- add hydrochloric acid
- if present, bubbling occurs and bubbles turn limewater milky
4
Q
sulfate test
A
- add drops of hydrochloric acid then add barium chloride solution
- white precipitate of barium chloride occurs if sulfate present
5
Q
chloride test
A
- damp blue litmus paper
- turns red, then bleached white
6
Q
bromide test
A
- add dilute nitric acid
- cream precipitate forms if present
7
Q
iodide test
A
- add dilute nitric acid
- yellow precipitate forms if present
8
Q
hydrogen test
A
lighted splint, squeaky pop occurs
9
Q
oxygen test
A
glowing splint relights
10
Q
halide test
A
- add dilute nitric acid then silver nitrate soltution
CHLORIDE - white
BROMIDE - cream
IODIDE - yellow
