Multiple choice

Out of the following which is called Marshalls acid?

  1. H2S3O8

  2. H2S2O8

  3. H3S2O8

  4. H2S8O3

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Marshall's acid (peroxodisulfuric acid) has the formula H2S2O8. It contains two sulfur atoms each in +6 oxidation state, linked by a peroxide bridge. It is a strong oxidizing agent.