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Chemistry > Qualitative tests- tests for aqueous cations > Flashcards

Qualitative tests- tests for aqueous cations Flashcards

1
Q

effect of aqueous sodium hydroxide:ammonia produced on warming.
effect of aqueous ammonia: none.

A

ammonium (NH4+)

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2
Q
  • effect of aqueous sodium hydroxide: white ppt., insoluble in excess.
  • effect of aqueous ammonia: no ppt., or very slight white ppt.
A

calcium (Ca2+)

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3
Q
  • effect of aqueous sodium hydroxide: light blue ppt., insoluble in excess.
  • effect of aqueous ammonia: light blue ppt., soluble in excess, giving a dark blue solution.
A

copper (Cu2+)

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4
Q
  • effect of aqueous sodium hydroxide: green ppt., insoluble in excess.
  • effect of aqueous ammonia: green ppt., insoluble in excess.
A

iron(II) (Fe2+)

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5
Q
  • effect of aqueous sodium hydroxide:red-brown ppt., insoluble in excess.
  • effect of aqueous ammonia: red-brown ppt., insoluble in excess.
A

iron(III) (Fe3+)

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6
Q
  • effect of aqueous sodium hydroxide: white ppt., soluble in excess giving a colourless solution.
  • effect of aqueous ammonia: white ppt., soluble in excess, giving a colourless solution.
A

zinc (Zn2+)

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Chemistry (4 decks)

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