WorksheetsChemical analysis - Retrieval 2
Total questions: 10
Worksheet time: 8mins
When sodium hydroxide is added to a test solution, a blue precipitate is formed. Which metal ion is present?
Fe2+
Cu2+
Ca2+
Al3+
When sodium hydroxide is added to a test solution, a green precipitate is formed. Which metal ion is present?
Fe2+
Fe3+
Cu2+
Ca2+
What colour precipitate is formed when sodium hydroxide is added to a test solution containing Fe3+ ions?
White
Cream
Brown
Blue
What colour precipitate is formed when sodium hydroxide is added to a test solution containing Ca2+ ions?
Brown
White
Cream
Blue
Explain how, using sodium hydroxide solution, you could tell the difference between a solution containing aluminium ions and a solution containing magnesium ions.
Which of the following equations is balanced correctly?
Ca2+ + 3OH- → Ca(OH)2
Al3+ + 2OH- → Al(OH)2
Mg2+ + 2OH- → Ca(OH)2
Ca2+ + 2OH- → Ca(OH)2
Which 2 solutions are required to test a solution for halide ions (Cl-, Br- or I-)
Hydrochloric acid and silver nitrate
Nitric acid and limewater
Limewater and silver nitrate
Nitric acid and silver nitrate
Which 2 solutions are required to test a solution for sulfate ions, SO42- ?
Hydrochloric acid and barium sulfate
Sulfuric acid and limewater
Hydrochloric acid and barium chloride
Nitric acid and silver nitrate
A solution produces:
A blue precipitate when dilute sodium hydroxide is added and
a white precipitate when hydrochloric acid and barium chloride is added
What is the name of the solution being tested?
(a)
A solution produces:
A lilac flame when heated in a Bunsen flame and
a cream precipitate when nitric acid and silver nitrate is added
What is the name of the solution being tested?
(a)
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