When dilute acid is added to an unknown solution, bubbles of gas are made, which turn limewater cloudy white. Which ion is present?HalideCarbonateHydroxideSulfate2When silver nitrate solution is added to a solution, a cream precipitate is formed. Which halide ion is present?BromideChlorideIodideFluoride3What must be added to a solution, in the presence of dilute hydrochloric acid, to test for sulfate ions?Sodium hydroxide solutionBarium chloride solutionSilver nitrate solutionCopper sulfate solution4An unknown solution gave a green colour with a flame test, and then a white precipitate when barium chloride was added. What is the unknown solution?Sodium chlorideCopper carbonateCopper sulfateMagnesium sulfate5An unknown solution gave a lilac colour with a flame test, and then a yellow precipitate when silver nitrate was added. What is the unknown solution?Sodium chloridePotassium carbonatePotassium iodideLithium iodide6What tests will show that an unknown solution is sodium chloride?Yellow flame colour, cream precipitate with silver nitrateBrick red flame colour, yellow precipitate with silver nitrateCrimson red flame colour, white precipitate with silver nitrateYellow flame colour, white precipitate with silver nitrate
Question
When dilute acid is added to an unknown solution, bubbles of gas are made, which turn limewater cloudy white. Which ion is present?HalideCarbonateHydroxideSulfate2When silver nitrate solution is added to a solution, a cream precipitate is formed. Which halide ion is present?BromideChlorideIodideFluoride3What must be added to a solution, in the presence of dilute hydrochloric acid, to test for sulfate ions?Sodium hydroxide solutionBarium chloride solutionSilver nitrate solutionCopper sulfate solution4An unknown solution gave a green colour with a flame test, and then a white precipitate when barium chloride was added. What is the unknown solution?Sodium chlorideCopper carbonateCopper sulfateMagnesium sulfate5An unknown solution gave a lilac colour with a flame test, and then a yellow precipitate when silver nitrate was added. What is the unknown solution?Sodium chloridePotassium carbonatePotassium iodideLithium iodide6What tests will show that an unknown solution is sodium chloride?Yellow flame colour, cream precipitate with silver nitrateBrick red flame colour, yellow precipitate with silver nitrateCrimson red flame colour, white precipitate with silver nitrateYellow flame colour, white precipitate with silver nitrate
Solution
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The ion present is Carbonate. When dilute acid is added to a carbonate, carbon dioxide gas is produced, which turns limewater cloudy white.
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The halide ion present is Bromide. When silver nitrate solution is added to a bromide solution, a cream precipitate of silver bromide is formed.
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Barium chloride solution must be added to a solution, in the presence of dilute hydrochloric acid, to test for sulfate ions. A white precipitate of barium sulfate will form if sulfate ions are present.
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The unknown solution is Copper sulfate. A green flame color indicates the presence of copper ions, and a white precipitate with barium chloride indicates the presence of sulfate ions.
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The unknown solution is Potassium iodide. A lilac flame color indicates the presence of potassium ions, and a yellow precipitate with silver nitrate indicates the presence of iodide ions.
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The tests that will show that an unknown solution is sodium chloride are a yellow flame color and a white precipitate with silver nitrate.
Similar Questions
Dilute nitric acid followed by silver nitrate solution is added to a sample, Z.A yellow precipitate develops. What ion is present in the solution?
Name the dilute acid that must be present in order to test for sulfate ions with barium chloride.
A solution is suspected to contain iodide ions. It is tested using a dilute acid and another solution to confirm this suspicion. Name the second solution.
Sulfate ions can be tested for using a dilute acid and which other solution?
15 An anhydrous white salt, Z, is heated strongly for 30 minutes. A mixture of gases is given off. Thesolid remaining in the test-tube is then dissolved in a small volume of dilute hydrochloric acid. Theaddition of a few drops of dilute sulfuric acid to the test-tube causes a white precipitate to form.Which substance could be Z?A barium carbonateB barium nitrateC magnesium carbonateD magnesium nitrate
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