Identifying Non Metal Ions

Question 1

How to test for carbonate ion

Answer 1

• add dilute acid to our sample
• acid will react with carbonate to make co2
  = will fizz
• bubble the gas through limewater
  = if cloudy co2 present
  = means we started with the carbonate ion

Question 2

How to test for sulphate ions

Answer 2

• add dilute hydrochloride acid to our sample
• add barium chloride solution
• if sulphate present
  = white precipitate

Question 3

How to workout mean rate of reaction

Answer 3

Quantity of product formed
/ time taken