test for aq cations Flashcards

1
Q

Ammonium NH4+

A

Effect of aq sodium hydroxide: Ammonia produced on warming

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2
Q

Calcium Ca2+

A

Effect of aq sodium hydroxide: white ppt insoluble in excess

Effect of aq ammonia: no ppt or very slight white ppt

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3
Q

copper Cu2+

A

Effect of aq sodium hydroxide: light blue ppt insoluble in excess

Effect of aq ammonia: light blue ppt soluble in excess giving a dark blue solution

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4
Q

iron(II) Fe2+

A

Effect of aq sodium hydroxide: green ppt insoluble in excess

Effect of aq ammonia: green ppt insoluble in excess

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5
Q

iron(III) Fe3+

A

Effect of aq sodium hydroxide: red-brown ppt insoluble in excess

Effect of aq ammonia: red-brown ppt insoluble in excess

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6
Q

zinc Zn2+

A

Effect of aq sodium hydroxide: White ppt soluble in excess giving a colourless solution

Effect of aq ammonia: White ppt soluble in excess giving a colourless solution

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