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Chemistry > Salt Analysis > Flashcards

Salt Analysis Flashcards

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1
Q

The flame test of Lithium gives?

A

A red flame

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2
Q

The flame test of Sodium gives?

A

A yellow flame

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3
Q

The flame test of Potassium gives?

A

Lilac flame

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4
Q

The flame test of Copper(II) ions gives?

A

Blue green flame

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5
Q

How to test if a solution is hydrated?

A

Gently heat it,droplets of colourless liquid will form at the top of the test tube

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6
Q

Checking if Cobalt(II)chloride is hydrous?

A

When heated it will give off gas that turns blue litmus paper to pink

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7
Q

Checking if Cobalt(II)chloride is anhydrous?

A

When heated the gas given off will turn pink litmus to blue

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8
Q

To test if a salt is a nitrate?

Procedure:

A

Add Sodium-hydroxide(NaOH) and Aluminium foil/powder.

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9
Q

To test if a salt is a nitrate?

Result of Procedure:

A

Ammonia(NH3) gas should be produced if nitrate. It turns litmus paper blue

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10
Q

To test if a salt is a chloride?

Procedure:

A

Add nitric acid to destroy any carbonates,then add silver nitrate solution

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11
Q

To test if a salt is a chloride?

Procedure’s result:

A

White silver chloride precipitate should form

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12
Q

To test if a salt is a bromide?

Procedure:

A

Add nitric acid to destroy any carbonates ,then add silver nitrate solution

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13
Q

To test if a salt is a bromide?

Procedure’s result:

A

Cream silver-bromide precipitates form

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14
Q

To test if a salt is a Sulfide?

Procedure:

A

Add hydrochloric Acid, a gas will be produced test the gas

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15
Q

To test if a salt is a Sulfide?

Procedure’s result:

A

The gas will turn acidified Potassium Manganate from purple to colourless

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16
Q

To test if a salt is a Sulfide?

Procedure’s 2nd possible result:

A

Gas will turn Potassium Dichromate yellow to green

17
Q

Which metals when reacted with Ammonia and/or SodiumHydroxide give white precipitates?

A

Aluminium, Zinc and Calcium

18
Q

Copper(II) ions when reacted with Ammonia or SodiumHydroxide result in…?

A

Blue precipitates

19
Q

Iron(II) ions when reacted with Ammonia or SodiumHydroxide result in…?

A

Insoluble green precipitates

20
Q

Iron(III) ions when reacted with Ammonia or SodiumHydroxide result in…?

A

Red brown precipitates

21
Q

Chromium when reacted with Ammonia or SodiumHydroxide result in…?

A

Soluble Green Precipitates

22
Q

Are the precipitates after Ammonia/SodiumHydroxide and Copper(II) reaction soluble?

A

The precipitates are only soluble in Ammonia

23
Q

The solubility of precipitates after Aluminium and Ammonia/SodiumHydroxide have reacted?

A

Precipitates dissolve in excess

24
Q

The solubility of precipitates after Calcium and Ammonia/SodiumHydroxide have reacted?

A

There are no precipitates. Slight precipitates with Ammonia

25
Q

The solubility of precipitates after Zinc and Ammonia/SodiumHydroxide have reacted?

A

Zinc dissolves in both SodiumHydroxide and Ammonia

26
Q

Aluminium when reacted with Ammonia or SodiumHydroxide result in…?

A

White precipitates

27
Q

Calcium when reacted with Ammonia or SodiumHydroxide result in…?

A

White precipitates

28
Q

Zinc when reacted with Ammonia or SodiumHydroxide result in…?

A

White precipitates

29
Q

Test for Alkenes?

A

Pass it through Bromine water it will turn orange to colourless

30
Q

Test for Alkane?

A

Pass through bromine water,it will remain orange

31
Q

Test for chlorine gas

A

Bleaches litmus paper

32
Q

To test if a salt is a Sulphate?

Procedure:

A

Add nitric acid and then add aqueous Barium nitrate

33
Q

To test if a salt is a Sulphate?

Procedure’s result:

A

White precipitates

34
Q

Colour of Phenophtalein in acid?

A

Colourless

35
Q

Colour of Phenophtalein in alkaline?

A

Pink

36
Q

Colour of methyl orange in acid?

A

Pink

37
Q

Colour of methyl orange and methyl red in alkaline?

A

Yellow

38
Q

Colour of methyl red in acid?

A

Red

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