Electrolysis and Electroplating (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
What is electrolysis?
What is electrolysis?
Use of electric current to cause a reaction
Where do positive ions (cations) move during electrolysis?
Where do positive ions (cations) move during electrolysis?
To the cathode (negative electrode)
Where do negative ions (anions) move during electrolysis?
Where do negative ions (anions) move during electrolysis?
To the anode (positive electrode)
What is an electrolyte?
What is an electrolyte?
Conducts current when melted or dissolved
What type of reaction occurs at the cathode during electrolysis?
What type of reaction occurs at the cathode during electrolysis?
Reduction
What type of reaction occurs at the anode during electrolysis?
What type of reaction occurs at the anode during electrolysis?
Oxidation
What is the industrial use of copper(II) sulfate electrolysis with copper electrodes?
What is the industrial use of copper(II) sulfate electrolysis with copper electrodes?
To purify copper
What gas is produced at the cathode in acidulated water electrolysis?
What gas is produced at the cathode in acidulated water electrolysis?
Hydrogen
In acidulated water electrolysis, what is the ratio of to produced?
In acidulated water electrolysis, what is the ratio of to produced?
2:1
What colour does universal indicator turn at the cathode in sodium sulfate electrolysis?
What colour does universal indicator turn at the cathode in sodium sulfate electrolysis?
Blue
What forms at the anode in potassium iodide electrolysis?
What forms at the anode in potassium iodide electrolysis?
Iodine (brown colour)
In electroplating, where must the object to be plated be connected?
In electroplating, where must the object to be plated be connected?
To the cathode (negative electrode)