Tests For Ions

Question 1

Test for CO3 (2-)

Carbonates

Answer 1

HCl makes carbon dioxide which can be bubbles through limewater

Question 2

Test for sulfates SO4 (2-)

Answer 2

Add HCl to remove carbonate ions

Then add BaCl2 and it forms a white precipitate if ion is present

Question 3

Test for ammonium NH4 (+)

Answer 3

Use NaOH and litmus paper

Turns from red to blue with damp litmus paper