Group 16 - Oxygen Family
Mediumchemistry
Which of the following oxoacids of sulfur has peroxy linkage?
Select the correct option:
Solution
Incorrect! Answer:
H₂S₂O₈
Peroxydisulfuric acid (H2S2O8), also known as Marshall's acid, is a powerful oxidizing agent.
- Structure: It contains a peroxy linkage (−O−O−) connecting two sulfur atoms (HO−SO2−O−O−SO2−OH).
- In contrast, H2S2O7 (Oleum or Pyrosulfuric acid) has an oxo-linkage (−S−O−S−). H2SO4 (Sulfuric acid) and H2SO3 (Sulfurous acid) do not contain peroxy bonds.
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About This Question
- Subject
- chemistry
- Chapter
- p-block elements
- Topic
- group 16 - oxygen family
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
H₂S₂O₈
Peroxydisulfuric acid (H2S2O8), also known as Marshall's acid, is a powerful oxidizing agent.
- Structure: It contains a peroxy linkage (−O−O−) connecting two sulfur atoms (HO−SO2−O−O−SO2−OH).
- In contrast, H2S2O7 (Oleum or Pyrosulfuric acid) has an oxo-linkage (−S−O−S−). H2SO4 (Sulfuric acid) and H2SO3 (Sulfurous acid) do not contain peroxy bonds.
This medium difficulty chemistry question is from the chapter p-block elements, covering the topic of group 16 - oxygen family. It appeared in the 2025 exam.
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