Question detail
During the electrolysis of an aqueous sodium chloride solution, which gas is produced at the anode and why?
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
During the electrolysis of an aqueous sodium chloride solution, which gas is produced at the anode and why?
Answer
Chlorine gas is produced at the anode during the electrolysis of an aqueous sodium chloride solution. This occurs because the chloride ions are oxidized, losing electrons to form chlorine gas.
Explanation
This question assesses the student's ability to link the electrolysis process to the specific ions present in the solution and the resulting products. It requires an understanding of oxidation and the behavior of ions during electrolysis.
Common mistake
Misunderstanding Reactivity
Students often think that the metal will always be produced at the cathode during electrolysis, regardless of its reactivity compared to hydrogen.
Remind students that a metal will only be produced at the cathode if it is less reactive than hydrogen; otherwise, hydrogen gas will be produced instead.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.