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Group the six metal ions tested in Part B into two "families" based on your observations...

Group the six metal ions tested in Part B into two "families" based on your observations of their re-activities with ammonium carbonate, ammonium sulfate, ammonium hydrogen phosphate.

Part B: Barium, Calcium, Lithium, Sodium, Potassium, Strontium

Family 1 Family 2

1. 1.

2. 2.

3. 3.

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Answer #1

Family 1 will contain metal ions of Barium, Calcium and Strontium. When these ions are reacted with ammonium carbonate, ammonium sulphate and ammonium hydrogen phosphate, the carbonates (BaCO3, CaCO3, SrCO3), sulphates (BaSO4, CaSO4, SrSO4), and hydrogen phosphate (BaHPO4, CaHPO4, SrHPO4) are formed and all of these are insoluble in water.

Family 2 will contain Lithium, Sodium and Potassium ions. With these ions, carbonates (Li2CO3, Na2CO3, K2CO3), sulphate (Li2SO4, Na2SO4, K2SO4) and hydrogen phosphate (LiHPO4, NaHPO4, KHPO4) are formed and these are soluble in water.

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