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Chem > Test For Aqueous Cations > Flashcards

Test For Aqueous Cations Flashcards

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1
Q

Aluminum

A

Aqueous sodium hydroxide: white ppt soluble in excess giving a colorless solution
Aqueous ammonia : white ppt insoluble in excess

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2
Q

Ammonium

A

Sodium hydroxide : ammonia produces on warming

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3
Q

Calcium

A

Sodium hydroxide : white ppt insoluble in excess
Aqueous ammonia: no ppt or very slight white ppt

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4
Q

Chromium

A

Sodium hydroxide : green ppt soluble in excess
Ammonia : green ppt insoluble in excess

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5
Q

Copper 2

A

Sodium hydroxide : light blue ppt insoluble in excess
Ammonia : light blue ppt double in excess giving a dark blue solution

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6
Q

Iron 2

A

Sodium hydroxide: green ppt insoluble in excess ppt turns brown near surface on standing
Ammonia: green ppt insoluble in excesss ppt turn brown on surface on standing

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7
Q

Iron 3

A

Sodium hydroxide : red brown pot insoluble in excess
Ammonia : red brown ppt insoluble in excess

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8
Q

Zinc

A

Sodium hydroxide : white ppt soluble in excess giving colorless solution
Ammonia: whit root soluble in excess giving colorless solution

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Chem (8 decks)

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