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Question

The oxidation number of sulfur in H2SO4 is :

A
+2
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B
+3
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C
+4
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D
+6
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E
+8
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Solution

The correct option is D +6
Let X be the oxidation number of S in H2SO4.
The oxidation number of hydrogen is +1 and the oxidation number of oxygen is -2.
2(+1)+X+4(2)=02+X8=0X6=0X=+6
Hence, the oxidation number of S in H2SO4is +6.

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