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Question

What will be the oxidation state of Sulphur in H2SO5?

A
+8
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B
+6
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C
+4
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D
+2
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Solution

The correct option is B +6


As we can see in the above image that , there is a peroxy linkage i.e. OO linkage of 2 oxygen atoms, so the oxidation state of those 2 oxygen atoms will be 1.
Other 3 oxygen atoms have 2 oxidation state.
Overall charge =0
Let oxidation state of S be x
So,
(2×+1)+x+(2×1)+(3×2)=0x=+6
So, oxidation state of S is +6

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