Consider the reactions: (A) H₂O₂ + 2HI → I₂ + 2H₂O (B) HOCl + H₂O₂ → H₃O⁺ + Cl⁻ + O₂. Which statement is correct about H₂O₂?
Correct answer: B. An oxidizing agent in (A) and a reducing agent in (B)
- A. An oxidizing agent in both (A) and (B)
- B. An oxidizing agent in (A) and a reducing agent in (B)
- C. A reducing agent in (A) and an oxidizing agent in (B)
- D. A reducing agent in both (A) and (B)
Explanation
In reaction (A), H₂O₂ is reduced while oxidizing I⁻ to I₂, so it acts as an oxidizing agent. In reaction (B), H₂O₂ is oxidized to O₂ while reducing HOCl to Cl⁻, so it acts as a reducing agent. Thus, H₂O₂ is an oxidizing agent in (A) and a reducing agent in (B).
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More s-Block and p-Block Elements questions
Which one of the following is larger in size than the oxygen atom?
Among LiH, NaH, KH, RbH, and CsH, the correct order of increasing ionic character is:
Which of the following hydrides is electron-rich hydride?
Choose the mixture that can act as a rockets propellant.
Very pure H2 (99.9%) can be made by which of the following processes?
Which one of the following noble gases are used for providing an inert atmosphere for welding?