Question detail
In the context of chlorine's disproportionation reaction, what is the oxidation state of chlorine in chlorate ions?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Group 7(17), the halogens
Question
- A. 0
- B. +1
- C. +3
- D. +5
Answer
+5
Explanation
In chlorate ions (ClO3-), the oxidation state of chlorine is +5. This is determined by considering the overall charge of the ion and the typical oxidation states of oxygen, which is -2. Therefore, the oxidation state of chlorine must balance the charge to +5.
Common mistake
Misunderstanding Disproportionation
Students often confuse disproportionation reactions with simple redox reactions, failing to recognize that in disproportionation, the same element is both oxidized and reduced.
To clarify, remember that in a disproportionation reaction, such as chlorine reacting with water, chlorine is oxidized to form chloride ions and reduced to form hypochlorous acid. Write the half-equations to show the oxidation and reduction processes clearly.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.