Half Equations in Electrolysis (AQA GCSE Chemistry Combined Science): Quizzes

📚Quizzes
Revision NotesModel AnswersQuizzesFlashcardsExam Questions
Half Equations in Electrolysis
Sign up to keep practising.Create a free account to play more quizzes and track your progress.

Practise the questions

10 questions from this quiz

Show

What do half equations in electrolysis represent?

Oxidation or reduction processes

At which electrode does reduction occur during electrolysis?

Cathode

At which electrode does oxidation occur during electrolysis?

Anode

What happens to ions at the cathode?

They gain electrons

What happens to ions at the anode?

They lose electrons

How many electrons does Al3+Al^{3+} gain at the cathode?

3

How many electrons are released in the half equation 2O2−→O2(g)+4e−2O^{2-} \rightarrow O_2(g) + 4e^-?

4

Which half equation shows aluminium ion reduction at the cathode?

Al3++3e−→Al(l)Al^{3+} + 3e^- \rightarrow Al(l)

Which half equation shows oxide ion oxidation at the anode?

2O2−→O2(g)+4e−2O^{2-} \rightarrow O_2(g) + 4e^-

What must be balanced on both sides of a half equation?

Charges

Explore AQA GCSE Chemistry Combined Science Revision Notes by Topics

Reactivity of Metals

Reactions of Acids

Electrolysis

Explore AQA GCSE Chemistry Combined Science Model Answers by Topics

Reactivity of Metals

Reactions of Acids

Electrolysis

Explore AQA GCSE Chemistry Combined Science Flashcards by Topics

Reactivity of Metals

Reactions of Acids

Electrolysis

Explore AQA GCSE Chemistry Combined Science Exam Questions by Topics

Reactivity of Metals

Reactions of Acids

Electrolysis

Join 100,000+ GCSE students studying Quizzes with us.

Select your subjects, and get access to A+ resources today.