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Chemistry > Qualitative analysis > Flashcards

Qualitative analysis Flashcards

1
Q

Aluminium in NaOH

A

White ppt and soluble in excess (colourless)

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2
Q

Aluminium in NH4

A

White ppt and insoluble in excess

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2
Q

Zinc in NaOH

A

White ppt and soluble in excess colourless

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3
Q

Zinc in NH4

A

White ppt and soluble in excess colourless

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4
Q

Calcium in NaOH

A

White ppt and insoluble in excess

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5
Q

Calcium in NH4

A

No precipitate

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6
Q

Ammonium in NaOH

A

No precipitate and produces NH4 gas when heated

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7
Q

Ammonium in NH4

A

No reaction

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8
Q

Copper (II) in NaOH

A

Blue ppt and insoluble in excess

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9
Q

Copper (II) in NH4

A

Blue ppt and soluble in excess forming dark blue solution

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10
Q

Iron (II) in NaOH

A

Green ppt and insoluble in excess (red-brown standing is formed)

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11
Q

Iron (II) in NH4

A

Green ppt and insoluble in excess (red-brown standing is formed)

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12
Q

Iron (III) in NaOH

A

Red- brown ppt and insoluble in excess (red-brown standing is formed)

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13
Q

Iron (III) in NH4

A

Red-brown ppt and insoluble in excess (red-brown standing is formed)

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14
Q

Test for CO₃²⁻

A

Add HCl CO₂ produced forms white ppt with limewater

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15
Q

Test for Cl⁻

A

Add nitric acid with silver nitrate White precipitate is formed.

16
Q

Test for I⁻

A

Add nitric acid with silver nitrate. Yellow precipitate is formed.

17
Q

Test for SO₄²⁻

A

Add sulfuric acid with barium nitrate. White precipitate is formed

18
Q

Test for NO₃⁻

A

Add NaOH and a small amount of aluminium power and warm the mixture. Ammonia gas is formed red litmus paper turns blue

19
Q

Test for Oxygen

A

Relights a splint

20
Q

Test for Hydrogen

A

Fire extinguish with a pop sound

21
Q

Test for Chlorine

A

Bleaches blue litmus paper

22
Q

Test for Ammonia gas

A

Red litmus paper tuns blue

23
Q

Test for Sulfur dioxide

A

Purple KMnO₄ is decoloured

Chemistry (4 decks)

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