Testing For Negative Ions

Question 0

What ion is present if when nitric acid and silver nitrate solution are added a white precipitate is formed?

Answer 0

Cl

Question 1

What is the test for carbonate ions?

Answer 1

Add nitric sulphuric or hydrochloric acid to the substance and place a bung connected to a test tube of limewater.

If carbonate ions are present the limewater will turn cloudy because of the formation of the white precipitate calcium carbonate.

Question 2

What ion is present if when nitric acid and silver nitrate solution are added a cream precipitate is formed?

Answer 2

Bromide

Question 3

What ion is present if when nitric acid and silver nitrate solution are added a yellow precipitate forms?

Answer 3

Iodide

Question 4

What is the general test for hallides?

Answer 4

Add nitric acid and then silver nitrate solution.

Question 5

What is the test for sulfates?

Answer 5

Add dilute HCl and then add barium chloride, a white precipitate is formed