Required Practical 6 - Organic Tests (AQA A-Level Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What observation confirms an alcohol when metallic sodium is added?
What observation confirms an alcohol when metallic sodium is added?
Bubbles of hydrogen gas and squeaky pop
What happens when acidified potassium dichromate is added to a tertiary alcohol?
What happens when acidified potassium dichromate is added to a tertiary alcohol?
No change, remains orange
What confirms the presence of an aldehyde using Fehling's solution?
What confirms the presence of an aldehyde using Fehling's solution?
Formation of a brick-red precipitate
What observation confirms an alkene when bromine water is added?
What observation confirms an alkene when bromine water is added?
Decolourises from orange to colourless
What happens to limewater in the test for carboxylic acids?
What happens to limewater in the test for carboxylic acids?
Turns cloudy
What colour precipitate forms with if bromide ions are present?
What colour precipitate forms with if bromide ions are present?
Cream precipitate
How should excess sodium be safely disposed of?
How should excess sodium be safely disposed of?
In ethanol
At what temperature should the halogenoalkane test with be heated?
At what temperature should the halogenoalkane test with be heated?
Approximately 60°C
Which two solutions are mixed to prepare the reagent for testing aldehydes?
Which two solutions are mixed to prepare the reagent for testing aldehydes?
Fehling's A and B
What improvement helps avoid errors from cross-contamination?
What improvement helps avoid errors from cross-contamination?
Use new test tubes for each test