Salt Analysis

Question 1

The flame test of Lithium gives?

Answer 1

A red flame

Question 2

The flame test of Sodium gives?

Answer 2

A yellow flame

Question 3

The flame test of Potassium gives?

Answer 3

Lilac flame

Question 4

The flame test of Copper(II) ions gives?

Answer 4

Blue green flame

Question 5

How to test if a solution is hydrated?

Answer 5

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

Question 6

Checking if Cobalt(II)chloride is hydrous?

Answer 6

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

Question 7

Checking if Cobalt(II)chloride is anhydrous?

Answer 7

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

Question 8

To test if a salt is a nitrate?

Procedure:

Answer 8

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

Question 9

To test if a salt is a nitrate?

Result of Procedure:

Answer 9

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

Question 10

To test if a salt is a chloride?

Procedure:

Answer 10

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

Question 11

To test if a salt is a chloride?

Procedure’s result:

Answer 11

White silver chloride precipitate should form

Question 12

To test if a salt is a bromide?

Procedure:

Answer 12

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

Question 13

To test if a salt is a bromide?

Procedure’s result:

Answer 13

Cream silver-bromide precipitates form

Question 14

To test if a salt is a Sulfide?

Procedure:

Answer 14

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

Question 15

To test if a salt is a Sulfide?

Procedure’s result:

Answer 15

The gas will turn acidified Potassium Manganate from purple to colourless

Question 16

To test if a salt is a Sulfide?

Procedure’s 2nd possible result:

Answer 16

Gas will turn Potassium Dichromate yellow to green

Question 17

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

Answer 17

Aluminium, Zinc and Calcium

Question 18

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

Answer 18

Blue precipitates

Question 19

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

Answer 19

Insoluble green precipitates

Question 20

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

Answer 20

Red brown precipitates

Question 21

Chromium when reacted with Ammonia or SodiumHydroxide result in…?

Answer 21

Soluble Green Precipitates

Question 22

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

Answer 22

The precipitates are only soluble in Ammonia

Question 23

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

Answer 23

Precipitates dissolve in excess

Question 24

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

Answer 24

There are no precipitates. Slight precipitates with Ammonia

Question 25

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

Answer 25

Zinc dissolves in both SodiumHydroxide and Ammonia

Question 26

Aluminium when reacted with Ammonia or SodiumHydroxide result in...?

Answer 26

White precipitates

Question 27

Calcium when reacted with Ammonia or SodiumHydroxide result in...?

Answer 27

White precipitates

Question 28

Zinc when reacted with Ammonia or SodiumHydroxide result in...?

Answer 28

White precipitates

Question 29

Test for Alkenes?

Answer 29

Pass it through Bromine water it will turn orange to colourless

Question 30

Test for Alkane?

Answer 30

Pass through bromine water,it will remain orange

Question 31

Test for chlorine gas

Answer 31

Bleaches litmus paper

Question 32

To test if a salt is a Sulphate? | Procedure:

Answer 32

Add nitric acid and then add aqueous Barium nitrate

Question 33

To test if a salt is a Sulphate? | Procedure’s result:

Answer 33

White precipitates

Question 34

Colour of Phenophtalein in acid?

Answer 34

Colourless

Question 35

Colour of Phenophtalein in alkaline?

Answer 35

Pink

Question 36

Colour of methyl orange in acid?

Answer 36

Pink

Question 37

Colour of methyl orange and methyl red in alkaline?

Answer 37

Yellow

Question 38

Colour of methyl red in acid?

Answer 38

Red