5.2 - Preparation and Properties of Ethyne (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
Which chemical reacts with water to prepare ethyne gas?
Which chemical reacts with water to prepare ethyne gas?
Calcium dicarbide
What is produced alongside ethyne when calcium dicarbide reacts with water?
What is produced alongside ethyne when calcium dicarbide reacts with water?
Calcium hydroxide
How are impurities removed from ethyne gas?
How are impurities removed from ethyne gas?
Bubbling through acidified copper(II) sulfate
What is the main hazard associated with calcium dicarbide?
What is the main hazard associated with calcium dicarbide?
Severe eye hazard
Where should bromine water be used during this experiment?
Where should bromine water be used during this experiment?
In a fume cupboard
Why is the first test tube of collected gas discarded?
Why is the first test tube of collected gas discarded?
It contains mostly air
How should water be added to calcium dicarbide?
How should water be added to calcium dicarbide?
Dropwise using a teat-pipette
What type of flame is observed when ethyne burns?
What type of flame is observed when ethyne burns?
Smoky, sooty flame
What does limewater turning milky indicate?
What does limewater turning milky indicate?
Production of carbon dioxide
What happens to bromine water when ethyne is added?
What happens to bromine water when ethyne is added?
Brown colour is decolourised
What causes the sooty flame during ethyne combustion?
What causes the sooty flame during ethyne combustion?
Incomplete combustion forming carbon particles
What does decolourisation of bromine water indicate about ethyne?
What does decolourisation of bromine water indicate about ethyne?
It is unsaturated with a triple bond