Anion Test Flashcards
Carbonate ion: Test
Add dilute hydrochloric acid to the salt
Carbonate ion: Observation
Carbon dioxide evolved which turnd limewater milky
Carbonate ion: Confirmatory Test
Add magnesium sulfate to a fresh solution. White percipitate forms.
Carbonate ion: Chemical equation
CO3 + 2H -> CO2 + H2O
Mg + CO3 -> MgCO3
Hydrogencarbonate: Test
Add dilute hydrochloric acid
Hydrogencarbonate ion: Observation
Carbon dioxide evolved which turns limewater milky
Hydrogencarbonate ion: Confirmatory test
Add magnesium sulfate to a fresh solution
Nitrate ion: Test
Add fresh FeSO4 solution and concentrated H2SO4(sulfuric acid) to the solution, at an angle.
Nitrate ion: Observation
Brown ring observed
Chloride ion: Test
Add silver nitrate (AgNO3) to solution
Chloride ion: Observation
White percipitate is formed
Chloride ion: Confirmatory test
White percipitate dissolves in ammonia solution
Chloride ion: Chemical equation
AgNO3 + NaCl -> AgCl
Sulfite/Sulfate ion: Test
Add barium chloride (BaCl2) to solution
Sulfite/Sulfate ion: Observation
White percipitate is formed to make barium sulfite
White percipitate is formed to make barium sulfate
Sulfite/ Sulfate ion: Confirmatory tests
Barium sulfite is soluble in dilute HCl
Barium sulfate is not soluble in HCl
Sulfite/Sulfate: Chemical equation
Ba + SO3 -> BaSO3
Ba + SO4 -> BaSO4
SO3 + 2H -> SO2 + H2O
Phosphate ion: Test
Ammonium molybdate and concentrated nitric acid are added to the solution and is warmed
Phosphate ion: Observation
Yellow percipitate is formed
Hydrogencarbonate ion: Chemical equation
HCO3 + H -> CO2 + H2O
Mg + 2HCO3 -> Mg(HCO3)2 -> MgCO3 + CO2 + H2O
