Learning objective
Predict that hydrogen is produced at the cathode if the metal is more reactive than hydrogen.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Electrolysis
Subtopic
Electrolysis of aqueous solutions
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Quick explanation
Predict that hydrogen is produced at the cathode if the metal is more reactive than hydrogen
- This point belongs to Electrolysis, especially Electrolysis of aqueous solutions.
- You need to be able to predict that hydrogen is produced at the cathode if the metal is more reactive than hydrogen.
- The key ideas to know are hydrogen.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Electrolysis of aqueous solutions to exam-style questions, flashcards, and revision notes for Electrolysis.
Quick student answer
What should you know about predict that hydrogen is produced at the cathode if the metal is more reactive than hydrogen?
Direct answer
In Chemistry, this page helps you answer questions about predict that hydrogen is produced at the cathode if the metal is more reactive than hydrogen within Electrolysis. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are cathode and reactivity series.
Key terms
- cathode: The negative electrode where reduction occurs during electrolysis. In Electrolysis of aqueous solutions, this term helps explain predict that hydrogen is produced at the cathode if the metal is more reactive than hydrogen for AQA GCSE Chemistry 8462 Unit 4.4.
- reactivity series: A list of metals arranged in order of decreasing reactivity, used to predict products in electrolysis.
Common trap
Hydrogen Production Prediction Error: Remind students to compare the reactivity of the metal with hydrogen; hydrogen is produced only if the metal is more reactive than hydrogen.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Define electrolysis as the splitting up of an ionic compound using electricity.
The process of electrolysis
- Describe an electrolyte as a liquid that contains free-moving ions.
The process of electrolysis
- Explain why ionic compounds must be molten or dissolved in water for electrolysis to occur.
The process of electrolysis
- Identify the positive electrode as the anode.
The process of electrolysis
- Identify the negative electrode as the cathode.
The process of electrolysis