Selected reactions of Mn and its compounds

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Last updated 1:43 AM on 9/11/26
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8 Terms

1
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Colour of MnO4- (aq)

Purple

2
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Compound, colour & type of rxn: MnO4- in neutral/basic medium

  • MnO2 (s)

  • Brown ppt

  • Reduction


3
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Compound, colour & type of rxn: MnO4- in acidic medium

  • [Mn(H2O)6]²+ (aq)

  • Pale pink

  • Reduction


4
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Compound, colour & type of rxn: [Mn(H2O)6}²+ & Na2CO3 (aq)

  • MnCO3 (s)

  • White ppt

  • Precipitation


5
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Compound, colour & type of rxn: [Mn(H2O)6]²+ & NaOH/NH3 (aq)

  • Mn(OH)2

  • Off-white ppt, insoluble in excess

  • Precipitation


6
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Compound, colour & type of rxn: Mn(OH)2 in contact with air

  • Mn(OH)3 (s)

  • Brown/dark brown ppt

  • Oxidation


7
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Compound, colour & type of rxn: Mn(OH)2 & H2O2 (aq)

  • MnO2 (s)

  • Brown ppt

  • Oxidation


8
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