Which of the following oxo-acids of sulphur has more than one oxidation state of sulphur?
H2S2O3
H2S2O6
H2S2O4
H2S2O8
A
H2S2O6
B
H2S2O3
C
H2S2O4
D
H2S2O8
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Solution
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Thiosulphuric acid H2S2O3 has more than one oxidation state of sulphur. S=S linkage is present in thiosulphuric acid. One S atom has −2 oxidation state and other S atom has +6 oxidation state.
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