H2O2 cannot be synthesized by:
Correct answer: B. Addition of ice cold H2SO4 on PbO2
- A. Addition of ice cold H2SO4 on BaO2
- B. Addition of ice cold H2SO4 on PbO2
- C. Aerial oxidation of 2 ethyl anthraquinol
- D. Electrolysis of (NH4)2SO4 at a high current density
Explanation
Lead dioxide (PbO₂) is not a peroxide but a true oxide of lead in the +4 oxidation state. It reacts with sulfuric acid in an acid-base reaction, not a redox reaction that would produce hydrogen peroxide. The other methods listed are valid synthesis routes for H₂O₂.
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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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