Question detail
Chemical changes case 097 electrode-ions. A student predicts electrolysis products. Which option keeps ions and electrodes clear? Focus on Write balanced symbol equations for electrolysis molten ionic in Electrolysis of molten ionic compounds, not on a neighbouring Unit 4.4 reaction idea.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Electrolysis
Question
- A. Chemical changes case 097 electrode-ions: Matches the ion movement to the correct electrode and product for Write balanced symbol equations for electrolysis molten ionic
- B. Chemical changes case 097 electrode-ions: Sends positive ions to the positive electrode (Electrolysis of molten ionic compounds)
- C. Chemical changes case 097 electrode-ions: Uses electroplating language instead of electrolysis language (Write balanced symbol equations for electrolysis molten ionic)
- D. Chemical changes case 097 electrode-ions: Chooses a product without checking the ion discharged (Electrolysis)
Answer
The correct option is Chemical changes case 097 electrode-ions: Matches the ion movement to the correct electrode and product for Write balanced symbol equations for electrolysis molten ionic.
Explanation
The correct option is Chemical changes case 097 electrode-ions: Matches the ion movement to the correct electrode and product for Write balanced symbol equations for electrolysis molten ionic. It is correct because it directly supports the approved learning objective to write balanced symbol equations for electrolysis of molten ionic compounds when formulae are supplied in Electrolysis of molten ionic compounds. The other options are incorrect because they blur a Unit 4.4 concept boundary: acid versus alkali versus base, oxidation versus reduction, displacement versus reduction, electrolysis versus electroplating, anode versus cathode, positive versus negative ions, oxidation state versus ionic charge, or strong acid versus concentrated acid.
Common mistake
Common Mistake in Writing Balanced Equations
Students often forget to balance the number of atoms of each element on both sides of the equation when writing balanced symbol equations for electrolysis.
To fix this, carefully count the number of atoms of each element in the reactants and products, and adjust the coefficients to ensure they are equal on both sides.
Related flashcards
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