Half Equations in Electrolysis (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): 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

11 questions from this quiz

Show

What do half equations represent in electrolysis?

Reactions at each electrode

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 during electrolysis?

They gain electrons

What happens to ions at the anode during electrolysis?

They lose electrons

How many electrons does \ceAl3+\ce{Al^{3+}} gain to form \ceAl\ce{Al} at the cathode?

Three electrons

How many electrons are released when 2\ceO2−2\ce{O^{2-}} forms \ceO2\ce{O_2} at the anode?

Four electrons

Which ion is attracted to the cathode during electrolysis of \ceAl2O3\ce{Al_2O_3}?

\ceAl3+\ce{Al^{3+}}

Which ion is attracted to the anode during electrolysis of \ceAl2O3\ce{Al_2O_3}?

\ceO2−\ce{O^{2-}}

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

Charges

Which industry uses electrolysis for metal extraction?

Metal extraction industry

Explore OCR GCSE Chemistry A, Combined (Gateway Science Suite) Revision Notes by Topics

Reactivity of Metals

Reactions of Acids

Electrolysis

Explore OCR GCSE Chemistry A, Combined (Gateway Science Suite) Model Answers by Topics

Reactivity of Metals

Reactions of Acids

Electrolysis

Explore OCR GCSE Chemistry A, Combined (Gateway Science Suite) Flashcards by Topics

Reactivity of Metals

Reactions of Acids

Electrolysis

Explore OCR GCSE Chemistry A, Combined (Gateway Science Suite) 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.