Positive Ions tests and results
Triple Chemistry - Old spec, last exam June 14th 2017
- Created by: DeadL1ght
- Created on: 10-05-17 09:22
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- Positive Ions and Their Tests
- Flame Test
- Potassium (K+)
- Lilac
- Calcium (Ca^ 2+)
- Red
- Barium (Ba^ 2+)
- Green
- Sodium (Na+)
- Yellow
- Lithium (Li+)
- Crimson
- Potassium (K+)
- Unknown Solution
- Add Sodium Hydroxide Solution (NaOH)
- If a white precipitate (solid) is formed:
- Dissolves in excess Sodium Hydroxide Solution
- Al ^3+
- Insoluble in excess Sodium Hydroxide Solution
- Mg ^2+ Ca ^2+ Distinguish using the flame test
- Dissolves in excess Sodium Hydroxide Solution
- Coloured Precipitate (solid)
- Light Green that slowly turns brown (Dirty Green)
- Fe ^2+
- Light Blue
- Cu ^2+
- Reddish Brown (Rust colour)
- Fe ^3+
- Light Green that slowly turns brown (Dirty Green)
- If a white precipitate (solid) is formed:
- Add Sodium Hydroxide Solution (NaOH)
- Flame Test
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