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Chemistry > Qualitative analysis > Flashcards

Qualitative analysis Flashcards

1
Q

Aluminium 3+ and lead 2+ in sodium hydroxide

A

White ppt, soluble in excess

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2
Q

Aluminium and lead in ammonia

A

White ppl insoluble in excess

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3
Q

Ammonium and sodium hydroxide

A

Ammonia produced, warming

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4
Q

Calcium in sodium hydroxide

A

White ppt, insoluble in excess

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5
Q

Calcium in ammonia

A

No ppt

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6
Q

Zinc 2+ in sodium hydroxide and ammonia

A

White ppt, soluble in excess

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7
Q

Copper 2+ in sodium hydroxide

A

Light blue ppt, insoluble in excess

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8
Q

Copper 2+ in ammonia

A

Light blue ppt, soluble in excess creates dark blue solution

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9
Q

Iron 3+ in sodium hydroxide and ammonia

A

Red brown ppt, insoluble in excess

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10
Q

Iron 2+ in sodium hydroxide and ammonia

A

Greenish ppt, insoluble in excess

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11
Q

Carbonate anion

A

Add dilute hydrochloric acid and bubble through limewater. Effervescence and white ppt produced

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12
Q

Chloride anion

A

Add dilute nitric acid and silver nitrate. White ppt

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13
Q

Iodide anion

A

Add dilute nitric acid and silver nitrate. Yellow ppt

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14
Q

Nitrate anion

A

Add sodium hydroxide, aluminium foil, warm. Ammonia produced

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15
Q

Sulfate anion

A

Add dilute nitric acid and barium nitrate. White ppt

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16
Q

Ammonia gas

A

Turn dry/damp red litmus paper blue

17
Q

Carbon dioxide

A

White ppt through limewater

18
Q

Chlorine gas

A

Bleaches damp litmus paper

19
Q

Hydrogen gas

A

lighted splint extinguishes with a ‘pop’ sound

20
Q

Oxygen gas

A

Relights glowing splint

21
Q

Sulfur dioxide

A

Turns potassium manganate from purple to colourless

22
Q

Water

A

1) warm mixture and place cobalt chloride. Turns blue to pink
2) add anhydrous copper sulfate. White to blue

Chemistry (2 decks)

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