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11 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is colour of group v elements after group separation? |
All white |
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Why we boil solutions after adding HAc? |
To drive reactions by expelling CO2 |
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Color of Ba flame test |
Apple green |
A fruit |
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Color of Sr flame test |
Crimson color |
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What is the double salt of CaAc2? |
CaSO4(NH4)2 SO4 (soluble)
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What formula is ammonium oxalate and what is its use? |
NH4OOC To react with CA double salt for confirmation test |
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Name the ppt and color of CA confirmation test |
Ca (OOC)2, white |
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Why not use CA flame test? |
Flame is intermittent and not satisfactory |
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How do we dissolve carbonates of group v elements? |
By adding HAc |
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How to separate Ba? |
Add K2CrO4, BaCrO4 ( yellow ppt forms)
Confirm first by testing a drop on microscope slide |
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How to separate Sr from CA? |
Add 50% NH4OH to basic, add excess (NH4)2 SO4 and boil. SrSO4 is insoluble salt |
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