Chemistry · Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions
Peroxydisulphuric acid and its salts are powerful oxidizing agents. Thus it can
Peroxydisulphuric acid and its salts are powerful oxidizing agents. Thus it can be estimated reducing agents and also study the kinetics of the reaction. Peroxydisulphuric acid:
- A. is also called Marshall's acid
- B. has two peroxy linkages
- C. liberates \( I_{2} \) with \( K I \) I in a fast reaction
- D. has oxidation number of sulphur as +7
Step-by-step solution
Peroxydisulphuric acid (H2S2O8) is commonly known as Marshall's acid. It contains one peroxy linkage (O-O), not two. Its reaction with KI to liberate I2 is slow, not fast. The oxidation number of sulfur in H2S2O8 is +6, not +7, due to the presence of the peroxy bond.
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