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Chemistry > Tests and Solubility Rules > Flashcards

Tests and Solubility Rules Flashcards

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1
Q

How to carry out flame test?(5)

A

1) Take a nichrome wire
2) Dip into HCl
3) Put into bunsen burner flame
4) Dip into sample of a metal salt
5) Put into roaring/blue flame

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2
Q

What is the colour of a flame of Magnesium

A

White brilliant flame, white smoke

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3
Q

What is the colour of a flame of Lithium?

A

Crimson (red)

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4
Q

What is the colour of a flame of Sodium?

A

Yellow

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5
Q

What is the colour of a flame of Potassium?

A

Lilac

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6
Q

What is the colour of a flame of Calcium?

A

Brick Red

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7
Q

What is the colour of a flame of Copper?

A

Blue/Green with white flashes

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8
Q

How to carry out a test for Cl-, Br-, I-?

A

Add nitric acid to remove impurities then silver nitrate

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9
Q

What is the colour of precipitate will be produced when Silver nitrate mixed with Cl-?

A

White

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10
Q

What is the colour of precipitate will be produced when Silver nitrate mixed with Br-?

A

Cream

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11
Q

What is the colour of precipitate will be produced when Silver nitrate mixed with I-?

A

Pale yellow

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12
Q

How to carry out test for sulphates?

A

Add HCl to remove impurities then Ba2Cl

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13
Q

What is the main impurity in sulphates?

A

Carbonate ions

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14
Q

How does the main impurity get into sulphates?

A

Hard water

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15
Q

What is the test for Sulphates? (SO4 -2) Result?

A

Add Barium chloride/ White precipitate

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16
Q

What is the test for Carbonates (CO3 -2) Result?

A

Add hydrochloric acid/ Bubbles turning limewater cloudy

17
Q

What is the colour of the precipitate when Sodium Hydroxide reacts with Cu2+?

A

Pale blue

18
Q

What is the colour of the precipitate when Sodium Hydroxide reacts with Fe2+?

A

Green

19
Q

What is the colour of the precipitate when Sodium Hydroxide reacts with Fe3+?

A

Red-brown

20
Q

What is the test for Ammonium ion NH4 +/ Result?

A

Add sodium hydroxide and gently warm/ Unpleasant smell and turns damp litmus paper blue

21
Q

What is the solubility rule for Nitrates?

A

Soluble

22
Q

What is the solubility rule for Ammonium Salts?

A

Soluble

23
Q

What is the solubility rule for Chlorides?

A

All soluble accept Lead Chloride and Silver Chloride

24
Q

What is the solubility rule for Sulphates?

A

All soluble accept Barium, Lead

25
Q

What is the solubility rule for Carbonates, oxides, hydroxides?

A

All Insoluble accept group one

26
Q

What is the solubility rule for group 1?

A

All soluble

27
Q

Test for Chlorine gas

A

Turns damp blue litmus paper red the bleaches

28
Q

Test for Alkenes

A

Orange bromine water turn colourless

29
Q

Test for water (2)

A

1) White anhydrous copper copper II sulphate turns white 2) Blue cobalt chloride paper turns pink

30
Q

Test for pure water

A

1) Boils at 100C and freezes at 0C

Chemistry (10 decks)

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