Anion (Non-metal) Tests- Triple only

Question 1

What are the 3 anion tests?

Answer 1

Carbonates

Halides

Sulphates

Question 2

How do you test for carbonates?

Answer 2

Add acid and see if it fizzes

as CO2 is released

Question 3

What is the test for CO2

Answer 3

Make Limewater go cloudy

Question 4

How do you test for a halide?

Answer 4

Add acidified Silver Nitrate

Question 5

What happens to the Silver Salts as you go down group 7?

Answer 5

They become a darker yellow

Question 6

What is the colour of Silver Chloride?

Answer 6

White

Question 7

What is the colour of Silver Bromide?

Answer 7

Cream

Question 8

What is the colour of Silver Iodide?

Answer 8

Yellow

Question 9

How do you test for a sulphate?

Answer 9

Add acidified Barium Chloride

Question 10

What do you see as a positive test for Sulphates? SO4 2-

Answer 10

White Precipitate

Question 11

Why can’t you use Sulphuric acid for the sulphate test?

Answer 11

Sulphuric acid makes sulphate salts

so will effect the end result

Question 12

Why can’t you use Hydrochloric acid for the Halide test?

Answer 12

Hydrochloric acid have chloride in them

Will effect the end results