Qualitative Analysis of Ions
Chemistry ⇒ Analytical Chemistry
Qualitative Analysis of Ions starts at 11 and continues till grade 12.
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A solution gives a blue precipitate with sodium hydroxide, which dissolves in excess to give a deep blue solution. Which ion is present?
A solution gives a white precipitate with silver nitrate, which dissolves in dilute ammonia. Which halide ion is present?
A solution gives a yellow precipitate with potassium chromate in the presence of lead(II) ions. What is the precipitate?
A white precipitate forms when dilute hydrochloric acid is added to a solution, followed by barium chloride. Which ion is likely present?
Describe the confirmatory test for ammonium ions using litmus paper.
Describe the confirmatory test for carbonate ions in a solution.
Describe the confirmatory test for chloride ions using silver nitrate and ammonia.
Describe the procedure to distinguish between carbonate and bicarbonate ions using magnesium sulfate.
Describe the procedure to distinguish between Fe2+ and Fe3+ ions using sodium hydroxide.
Describe the steps involved in the qualitative analysis of a mixture containing both chloride and sulfate ions.
Explain the role of group separation reagents in qualitative analysis of cations.
Explain why ammonium ions do not give a precipitate with sodium hydroxide but release a gas on heating.
Explain why dilute nitric acid is added before testing for halide ions with silver nitrate.
Explain why group II cations are precipitated as sulfides in acidic medium during qualitative analysis.
Explain why it is important to use freshly prepared reagents in qualitative analysis of ions.
State the color of the precipitate formed when barium chloride is added to a solution containing sulfate ions.
State the color of the precipitate formed when lead(II) ions react with iodide ions.
