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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3pn216

Select the correct statement(s) about oxoacids of sulphur.

AThe oxidation state of S in $H X_{2} SO X_{3}$ is $+ 6$ .
B $H X_{2} S X_{2} O X_{8}$ contains a peroxo (O-O) linkage.
C $H X_{2} S X_{2} O X_{7}$ contains an S-O-S linkage.
DThe average oxidation state of S in $H X_{2} S X_{2} O X_{3}$ is $+ 2$ .

Answer: B, C, D

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

is

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

.

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

has an S-O-S bridge. In

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

:

2 + 2 x - 6 = 0

gives average

x = + 2

. In

H X_{2} SO X_{3}

:

2 + x - 6 = 0

gives

x = + 4

, not

+ 6

.

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