AS Edexcel Chemistry (Qualitative) - Anion Test [Part 1]

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  • Created by: Gagan
  • Created on: 12-02-13 16:55
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  • Edexcel Chemistry (Practical Assessment) ANION
    • UNKNOWN COMPOUND
      • Add 2cm3 dilute hydrochloric acid
        • Effervescences (fizzing/bubbling) Carbonate ion (CO3-2) or Hydrocarbonate ion (HCO3-)
        • No Effervescence Nitrate ion (NO3-)
          • Heat a small amount of solid.
            • Brown gas (NO2 - Nitrogen dioxide) given off and glowing splint relight( O2 - Oxygen) - Group 2 Nitrate (or Lithium)
              • 2Uk(NO3)2 ==> 2Uk + 4NO2 + O2 // 4LiNO3 ==> 2Li2O + 4NO2 + O2
            • Glowing splint relights (O2 - Oxygen) - Group 1 Nitrate (not Lithium)
              • 2UkNO3 ==> 2UkO2 + O2

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