Dip wire loop in HCl (conc.)
Dip loop in sample
Hold over flame and observe colour change
Calcium - Brick Red
Strontium - Red
Barium - Pale Green
1 of 7
Identifying Group 2 ions
Add NaOH dropwise
Observe results
Magnesium - Slight white, Strong white in excess
Calcium - Slight white, Slight white in excess
Strontium - Slight white, Slight white in excess
Barium - No change, No change in excess
2 of 7
Test for Ammonium
Add NaOH
If NH₄ present H₂O and NH₃
Hold red litmus paper, if NH₃ present, it will turn blue
3 of 7
Test for Sulfate
Add HCl (removes any carbonate ions)
Add Barium Chloride
Barium Sulfate (white precipitate) produced
4 of 7
Test for OH⁻
Dip into red litmus paper
If OH⁻ present turns blue
Add HCl
CO₂ produced, bubble through limewater
Turns cloudy
7 of 7
Other cards in this set
Card 2
Front
Identifying Group 2 ions
Back
Add NaOH dropwise
Observe results
Magnesium - Slight white, Strong white in excess
Calcium - Slight white, Slight white in excess
Strontium - Slight white, Slight white in excess
Barium - No change, No change in excess
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