Question detail
What ions are present in an aqueous solution during electrolysis, and how do they affect the products formed?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Electrolysis
Question
What ions are present in an aqueous solution during electrolysis, and how do they affect the products formed?
Answer
In an aqueous solution, there are ions from the dissolved ionic compound as well as hydrogen ions (H⁺) and hydroxide ions (OH⁻) from water. The presence of these ions influences the products formed at the electrodes during electrolysis, as the reactivity of the ions determines which will be discharged.
Explanation
This answer demonstrates understanding of the composition of aqueous solutions and the role of different ions in electrolysis. The question tests the student's ability to link the presence of specific ions to the outcomes of the electrolysis process.
Common mistake
Confusing Ions in Aqueous Solutions
Students often forget that aqueous solutions contain not only ions from the ionic compound but also hydrogen ions and hydroxide ions from water.
To fix this, remember to include all types of ions present in the solution when describing aqueous electrolysis, specifically noting the contribution of water.
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