Testing For Negative Ions

Question 0

How do you test for Carbonate Ions?

Answer 0

Add Hydrochloric acid
- Carbon dioxide is produced. This can be tested using limewater, if the limewater turns milky, carbon dioxide is present.

Question 1

How do you test for Halide Ions?

Answer 1

Add acidified Silver Nitrate Solution.

• chloride forms white ppt
• bromide forms cream ppt
• iodide forms yellow ppt

Question 2

How do you test for Sulfate Ions?

Answer 2

Add Barium Chloride Solution

- White ppt forms.