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results for flame test group 2
barium ions - pale green
calcium ions - brick red
strontium ions - red
test for group 2 ions
add NaOH to the solution of metal ions
magnesium ions- slight white precipitate
calcium ions -slight white precipitate
strontium ions - slight white precipitate
barium ions - no change
solution of magnesium ion with OH- ions in excess
white precipitate forms
test for ammonium ions
add sodium hydroxide solution to test tube, heat gently if ammonium ions are present ammonia is produced, damp red litmus paper tuns blue.
test for sulphate ions
add HCl and BaCl if sulphate ions are present BaSO4 forms and solution tuns white
test for hydroxide ions
red litmus paper turns blue
test for halide ions
add nitric acid then, silver nitrate solution to solution of unknown halide ions forming silver halide solution
results for tests for halides
Chloride ions - white precipitate, dissolves in dilute ammonia
Bromide ions - cream precipitate, dissolves in concentrated ammonia
iodide ions - yellow precipitate, insoluble in ammonia
test for carbonate ions
add acid such as HCl, this produces CO2
test for CO2 using lime water if it turns cloudy, it is a positive test
Note 
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