Which of the following is both oxidizing and reducing agent?
Correct answer: D. KMnO4
- A. H2S
- B. H2SO4
- C. H2O
- D. KMnO4
Explanation
Potassium permanganate (KMnO4) is both an oxidizing and reducing agent, depending on the conditions of the reaction. This versatility is due to the ability of the manganese (Mn) atom in the KMnO4 molecule to undergo different oxidation states. When KMnO4 acts as an oxidizing agent, it undergoes reduction. In an acidic medium, it can oxidize various substances by accepting electrons and getting reduced to Mn2+ ions. On the other hand, when KMnO4 acts as a reducing agent, it undergoes oxidation. In an alkaline medium, it can reduce certain substances by donating electrons and getting oxidized to MnO2 or MnO42- ions.
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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.
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