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Which of the following is also referred to as ‘Marshall’s acid’?

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in Chemistry – Class 12 by (188k points)
Which of the following is also referred to as ‘Marshall’s acid’?

(a) HO3SOOSO3H

(b) HO3SOSO3H

(c) HO3SSO3H

(d) HO3SSO2H

The question was posed to me in unit test.

My question is from P-Block Elements topic in portion P-Block Elements of Chemistry – Class 12

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The correct option is (a) HO3SOOSO3H

The best explanation: Marshall’s acid is the common name for peroxydisulfuric acid. It is prepared by the reaction between chlorosulfuric acid and hydrogen peroxide. Another method includes the electrolysis of concentrated sulfuric acid (60% – 70%) with platinum electrodes at high current density and voltage.

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