Cation Analysis

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12 Terms

1
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Al3+

  1. white precipitate

  2. no precipitate

  3. K4FeCN6- no precipitate

2
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Ca2+

  1. white precipitate

  2. white precipitate

  3. (NH4)2CO4/H2SO4- white precipitate

3
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Mg2+

  1. white precipitate

  2. white precipitate

  3. (NH4)2CO4/H2SO4- no precipitate

4
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Zn2+

  1. white precipitate

  2. no precipitate

  3. K4FeCN6- cream precipitate

5
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Ag+

brown precipitate

6
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Cu2+

blue precipitate

7
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Fe2+

green precipitate

8
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Fe3+

rusty red precipitate

9
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Mn2+

flesh coloured precipitate

10
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Ba2+

  1. no precipitate

  2. heating- odourless

  3. HClO4- no precipitate

11
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K+

  1. no precipitate

  2. heating- odourless

  3. HClO4- white precipitate

12
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NH4+

  1. no precipitate

  2. heating- green/blue colour on indicator paper, characteristic odour (NH4+)