chemical analysis - identifying non-metal ions

Question 1

what are these ions

Answer 1

carbonate, halides and sulfate

Question 2

how do we test for the carbonate ion

Answer 2

1. add dilute acid to our sample
2. the acid will react with the carbonate to make carbon dioxide gas - you would see fizzing
3. bubble gas through limewater - if it goes cloudy carbonate is present

Question 3

how do we test for the halide ions

Answer 3

1. add dilute nitric acid to the sample
2. ass dilute silver nitrate solution
3. a precipitate will be produced

Question 4

chloride ions produce

Answer 4

a white precipitate

Question 5

bromide ions produce

Answer 5

a cream precipitate

Question 6

iodide ions produce

Answer 6

a yellow precipitate

Question 7

how do we test for sulphate ions

Answer 7

1. add dilute ions to our sample
2. add barium chloride solution
3. if present white precipitate will be produced