Question detail
What products are formed at the electrodes during the electrolysis of an aqueous sodium chloride solution?
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 products are formed at the electrodes during the electrolysis of an aqueous sodium chloride solution?
Answer
During the electrolysis of an aqueous sodium chloride solution, chlorine gas is produced at the anode and hydrogen gas is produced at the cathode.
Explanation
This question tests the understanding of the products formed during the electrolysis of an aqueous solution, specifically sodium chloride. It assesses the student's ability to recall the expected outcomes based on the presence of ions in the solution.
Common mistake
Misunderstanding Electrolysis Products
Students often predict that the metal will always be produced at the cathode during electrolysis of aqueous solutions, regardless of the metal's reactivity compared to hydrogen.
Students should remember that if the metal is more reactive than hydrogen, hydrogen will be produced at the cathode instead. It's important to refer to the reactivity series when making predictions.
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