Podcast
Questions and Answers
What is the result of heating the copper sulphide test mixture?
What is the result of heating the copper sulphide test mixture?
- Production of sulphur and copper nitrate
- Formation of deep blue tetraamminecopper(II) sulphate
- Oxidation of sulphur to sulphate (correct)
- Formation of copper ferrocyanide
What color precipitate is formed when potassium hexacyanoferrate(II) is added to the blue copper solution?
What color precipitate is formed when potassium hexacyanoferrate(II) is added to the blue copper solution?
- Yellow precipitate
- White precipitate
- Chocolate coloration (correct)
- Green coloration
What indicates the presence of Group III metal cations after adding ammonium hydroxide?
What indicates the presence of Group III metal cations after adding ammonium hydroxide?
- No visible change
- Dissolution of the original solution
- Formation of a yellow precipitate
- Formation of a brown or white precipitate (correct)
What is produced when ferric hydroxide dissolves in hydrochloric acid?
What is produced when ferric hydroxide dissolves in hydrochloric acid?
What color does the solution turn when potassium thiocyanate is added to confirm the presence of Fe3+ ions?
What color does the solution turn when potassium thiocyanate is added to confirm the presence of Fe3+ ions?
What compound is formed when zinc ion (Zn²⁺) is treated with hydrochloric acid?
What compound is formed when zinc ion (Zn²⁺) is treated with hydrochloric acid?
What is the color of the flame produced during the flame test for barium ions (Ba²⁺)?
What is the color of the flame produced during the flame test for barium ions (Ba²⁺)?
Which reagent is used to confirm the presence of zinc ions (Zn²⁺) after treatment with sodium hydroxide?
Which reagent is used to confirm the presence of zinc ions (Zn²⁺) after treatment with sodium hydroxide?
What is the first reaction step involved in the confirmatory test for barium ion (Ba²⁺)?
What is the first reaction step involved in the confirmatory test for barium ion (Ba²⁺)?
Which of the following statements about zinc hydroxide (Zn(OH)₂) is correct?
Which of the following statements about zinc hydroxide (Zn(OH)₂) is correct?
Flashcards
Copper Sulphide Test
Copper Sulphide Test
A confirmatory test for copper ions (Cu2+) using copper sulphide precipitate, which dissolves in nitric acid, forming copper nitrate. Heating the mixture yields sulphur, then copper sulphate. A blue solution appears.
Copper Ferrocyanide Test
Copper Ferrocyanide Test
A confirmatory test for copper ions (Cu2+) using potassium hexacyanoferrate(II), which forms a chocolate-colored precipitate of copper ferrocyanide when added to a blue solution.
Aluminium Ion Confirmation
Aluminium Ion Confirmation
Confirming Al3+ by treating an AlCl3 solution with sodium hydroxide, producing a white, gelatinous precipitate of aluminium hydroxide. This precipitate dissolves in excess sodium hydroxide.
Ferric Ferrocyanide Test
Ferric Ferrocyanide Test
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Ferric Thiocyanate Test
Ferric Thiocyanate Test
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Zinc Ion Confirmation
Zinc Ion Confirmation
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Zinc Chloride Test
Zinc Chloride Test
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Zinc Ferrocyanide Test
Zinc Ferrocyanide Test
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Barium Chromate Test
Barium Chromate Test
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Barium Flame Test
Barium Flame Test
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