JEE Main 2022 · 28 Jun · Shift 2 · Chemistry Q71

ChemistrySingle correct+4 / -1Question 71 of 90

Which of the following oxoacids of sulphur contains "S" in two different oxidation states ?

\mathrm{H_2S_2O_3}

\mathrm{H_2S_2O_6}

\mathrm{H_2S_2O_7}

\mathrm{H_2S_2O_8}

Answer and worked solution

Official answer: A

Thiosulphuric acid $\mathrm{H_2S_2O_3}$ has a central S (+6) and a terminal S (−2).

(A)

Topics:Oxoacids Oxidation number

JEE Main 2022 · 28 Jun · Shift 2, Chemistry question 71