Lesson 4.8.3.5
4.8.3.5 Sulfates Quiz: AQA Chemistry, Unit 8
20 questions
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Lesson 4.8.3.5, Sulfates: 20 multiple choice questions for the AQA GCSE Chemistry (8462), Unit 8: Chemical analysis, written with Revision Ninja.
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The 20 questions
-
What colour precipitate forms when sulfate ions react with barium chloride solution in the presence of dilute hydrochloric acid?
- Blue
- Red
- White
- Green
-
Which reagent is added to a test solution to check for sulfate ions?
- Silver nitrate solution
- Barium chloride solution
- Sodium hydroxide solution
- Limewater
-
A solution gives a white precipitate with barium chloride and dilute hydrochloric acid. Which ion is most likely present?
- Nitrate ion
- Hydroxide ion
- Carbonate ion
- Sulfate ion
-
Which observation confirms the absence of sulfate ions in a solution?
- No precipitate formed
- Blue precipitate formed
- Brown precipitate formed
- Green precipitate formed
-
Required practical 7 is used to identify ions in what type of sample?
- Complex mixtures
- Single ionic compounds
- Pure covalent liquids
- Pure hydrocarbon gases
-
Which practical topic is covered alongside flame tests in required practical 7?
- Rates of reaction
- Sulfates
- Titrations
- Electrolysis
-
Which AT skills are covered by the chemical tests practical?
- AT 1 and 8
- AT 2, 3 and 4
- AT 4 and 5
- AT 6 and 7
-
Sample X gives a white precipitate with barium chloride and dilute acid. Sample Y gives no precipitate. Which sample contains sulfate ions?
- Sample Y
- Sample X
- Neither sample
- Both samples
-
What is indicated if adding barium chloride and acid produces no precipitate?
- Metal is present
- Carbonate is present
- Sulfate is absent
- Halide is absent
-
Which ionic compound would give a white precipitate in the sulfate test?
- Sodium nitrate
- Potassium iodide
- Sodium chloride
- Sodium sulfate
-
An unknown compound gives a yellow flame and a positive sulfate test. Which compound is most likely?
- Sodium sulfate
- Copper sulfate
- Calcium chloride
- Potassium sulfate
-
Which reagents are used to specifically test for sulfate ions in solution?
- Barium chloride and acid
- Sodium hydroxide solution
- Silver nitrate and acid
- Limewater and acid
-
In a sulfate test, what must be present along with barium chloride solution?
- Universal indicator
- Concentrated sodium hydroxide
- Ethanol
- Dilute hydrochloric acid
-
What does a negative result in the barium chloride sulfate test mean?
- Carbonate detected
- No sulfate detected
- Chloride detected
- Inconclusive test
-
Which reagent is added before barium chloride to test for sulfate ions?
- Sodium hydroxide
- Nitric acid
- Sulfuric acid
- Hydrochloric acid
-
Which ion does barium chloride solution test for in the presence of dilute acid?
- Oxygen
- Sulfate
- Sodium
- Hydrogen
-
What is observed when sulfate ions react with acidified barium chloride?
- White solid forms
- Brown gas evolves
- Effervescence occurs
- Blue solution forms
-
Which practical activity is linked to identifying ions from flame tests up to sulfates?
- Required practical 8
- Required practical 7
- Required practical 1
- Required practical 3
-
How do chemical tests identify unknown ions in a sample?
- Calculating molar mass
- Characteristic observable result
- Measuring melting point
- Recording mass change
-
Which specific observation confirms the presence of sulfate ions?
- Effervescence produced
- White precipitate formed
- Green precipitate formed
- Blue precipitate formed
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