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~ chemistry ~ > chapter 12 - QA ( cation ) > Flashcards

chapter 12 - QA ( cation ) Flashcards

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1
Q

What reacts with Naoh (aq) and no ppt formed?

A

K+ or Na+

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2
Q

What reacts with NaOH (aq)with no ppt formed. But colourless, pungent gas is evolved on warming

A

NH4+

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3
Q

What reacts with NaOH (aq) and form white ppt, soluble in excess NaOH

A

Zn2+ or Pb2+ or Al3+

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4
Q

What reacts with NaOH (aq) and form white ppt, insoluble in excess NaOH

A

Ca2+

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5
Q

What reacts with NaOH (aq) and forms blue ppt soluble in excess NaOH

A

Cu2+

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6
Q

What reacts with NaOH (aq) and forms dirty-green ppt insoluble in excess NaOH

A

Fe2+

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7
Q

What reacts with NaOH and forms reddish-brown ppt insoluble in excess NaOH

A

Fe3+

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8
Q

What reacts with NH3 (aq), no ppt formed

A

K+, Na+, NH4^+, Ca2+

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9
Q

What reacts with NH3 (aq) and forms white ppt, soluble in excess NH3

A

Zn2+

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10
Q

What reacts with NH3 (aq) and forms white ppt insoluble in excess NH3

A

Pb2+, Al3+

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11
Q

What reacts with NH3 (aq) and forms blue ppt soluble in excess NH3 to a dark blue solution

A

Cu2+

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12
Q

What reacts with NH3 (aq) and forms dirty-green ppt insoluble in excess NH3

A

Fe2+

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13
Q

What reacts with NH3 (aq) and forms reddish-brown ppt insoluble in excess NH3

A

Fe3+

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~ chemistry ~ (4 decks)

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