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Chemical analysis
Question | Answer |
---|---|
Lithium ions go what colour? | Crimson |
Sodium ions go which colour? | Yellow |
Calcium ions go which colour? | Brick red |
Copper ions go which colour? | Green |
What do you add to cations (metal ions) to form a coloured precipitate? | Sodium Hydroxide |
What precipitate does calcium form? | White |
What precipitate does copper form? | Blue |
What precipitate does magnesium form? | White |
What precipitate does iron (2 and 3) form? | Green, and brown |
How to test for carbonates? | Dilute acid helps detect carbonates as it produces carbon dioxide |
How to test for Sulfates? | Use HCL and Barium chloride if sulfate ions are present a white precipitate is formed. |
Test for Halides ? | Cl-White Br-Cream I-Yellow Dilute nitric acid and silver nitrate. |