Testing for Sulfate Ions Flashcards
1
Q
Acidify the sample with dilute hydrochloric acid and then add a few drops of
A
aqueous barium chloride
2
Q
If a sulfate is present then a
A
white precipitate of barium sulfate is formed:
Ba2+ (aq) + SO42- (aq) → BaSO4 (s)
3
Q
exam tip
HCl is added first to remove any carbonates which may be present and would also produce a precipitate and interfere with the results.
A
3
Q
A
