Tests for anions (AQA GCSE Chemistry): Flashcards
📚Flashcards
Practise the cards
14 cards from this deck
ShowHide
Practise the cards
14 cards from this deck
Anions definition
Anions definition
Negative ions from non-metal elements
Carbonate test: reagent to add
Carbonate test: reagent to add
Any dilute acid
Carbonate test: observation
Carbonate test: observation
Fizzing and bubbles of gas
Test for CO gas
Test for CO gas
Limewater turns cloudy white
Sulfate test: step 1
Sulfate test: step 1
Add dilute HCl
Sulfate test: step 2
Sulfate test: step 2
Add barium chloride solution
Sulfate test: result
Sulfate test: result
White precipitate (barium sulfate)
Why add acid first (sulfate test)
Why add acid first (sulfate test)
Removes interfering carbonate ions
Halide test: step 1
Halide test: step 1
Add dilute nitric acid
Halide test: step 2
Halide test: step 2
Add silver nitrate solution
Chloride ion precipitate colour
Chloride ion precipitate colour
White (silver chloride)
Bromide ion precipitate colour
Bromide ion precipitate colour
Cream (silver bromide)
Iodide ion precipitate colour
Iodide ion precipitate colour
Yellow (silver iodide)
Why limewater goes cloudy (CO test)
Why limewater goes cloudy (CO test)
Forms insoluble calcium carbonate