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JEE Main levelSingle correct optionDifficulty 2 of 3bn065

What is the name of $H X_{2} S X_{2} O X_{8}$ , which contains one O-O linkage and two sulfur atoms?

Aperoxodisulfuric acid
Bperoxomonosulfuric acid
Cdisulfuric acid
Dthiosulfuric acid

Answer: A

H X_{2} S X_{2} O X_{8}

has two S and a peroxo group, so peroxodisulfuric acid (

HO X_{3} S - O - O - SO X_{3} H

).

H X_{2} SO X_{5}

is peroxomonosulfuric acid,

H X_{2} S X_{2} O X_{7}

is disulfuric acid and

H X_{2} S X_{2} O X_{3}

is thiosulfuric acid.

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