Qualitative Analysis of Ions
Chemistry ⇒ Analytical Chemistry
Qualitative Analysis of Ions starts at 11 and continues till grade 12.
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See sample questions for grade 11
A solution gives a green precipitate with sodium hydroxide, which turns brown on standing. Which cation is likely present?
A solution gives a reddish-brown precipitate with sodium hydroxide. Which cation is present?
A solution gives a white precipitate with barium chloride, which dissolves in dilute hydrochloric acid. Which anion is present?
A student adds dilute acid to a salt and observes a rotten egg smell. Which ion is present?
A solution gives a white precipitate with barium chloride, which dissolves in dilute hydrochloric acid. Which anion is present?
A student adds dilute acid to a salt and observes a rotten egg smell. Which ion is present?
A student adds dilute hydrochloric acid to a solid and observes effervescence. The gas produced turns limewater milky. Which ion is present?
A student adds dilute nitric acid to a solution, followed by silver nitrate, and observes a yellow precipitate. Which halide ion is present?
When barium chloride is added to a solution, a white precipitate forms. The precipitate is insoluble in dilute hydrochloric acid. Which anion is present? (1) SO42− (2) CO32− (3) Cl− (4) NO3−
Which anion can be detected by the formation of a blue color with starch-iodide paper? (1) Nitrate (2) Sulfite (3) Chloride (4) Nitrite
Which anion produces a yellow precipitate with lead(II) nitrate? (1) Cl− (2) SO42− (3) I− (4) NO3−
Which cation gives a deep blue color with ammonia solution due to the formation of a complex ion? (1) Fe2+ (2) Cu2+ (3) Zn2+ (4) Ca2+
Fill in the blank: The blue precipitate formed when copper(II) ions react with sodium hydroxide is ______.
Fill in the blank: The brown ring test is used to detect the presence of ______ ions.
Fill in the blank: The confirmatory test for ammonium ion involves warming the sample with sodium hydroxide and detecting the evolution of ______ gas.
Fill in the blank: The confirmatory test for magnesium ions involves the formation of a white precipitate with ______ solution.
Is it correct that the presence of Fe3+ ions can be confirmed by the formation of a blood-red complex with potassium thiocyanate?
Is it true that carbonate ions can be detected by the effervescence of a colorless, odorless gas when dilute acid is added?
Is it true that the presence of sulfate ions can be confirmed by the formation of a white precipitate with barium chloride that is insoluble in hydrochloric acid?
True or False: The addition of dilute sulfuric acid to a solution containing barium ions produces a white precipitate of barium sulfate.
