4C: Analysis of inorganic compounds

Question 1

Describe the test for carbonate and hydrocarbonate ions

Answer 1

Add dilute hydrochloric acid,
bubble the gas through limewater,
- turns cloudy

Question 2

Describe the test for sulfate ions

Answer 2

Do the carbonate test (Add HCl)
Add barium chloride,
- white precipitate forms

Question 3

Describe the test for ammonium ions

Answer 3

Warm with NaOH,
test the gas with damp red litmus,
- turns blue