Tests for Positive Ions

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You can test for various metal ions by putting your substance in a flame and seeing what colour the flame goes 

Lithium (Li+) ---> crimson flame

Sodium (Na+) ---> yellow flame

Potassium (K+) ---> lilac flame

Calcium (Ca 2+) ---> red flame

Barium (Ba 2+) ---> green flame 

To flame test a compound in a lab:

  • ensure the wire loop is clean: dip it in hydrochloric acid and rinse it


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