Question

In which of the following compounds, sulphur show maximum oxidation number?

• A. $S{O}_3$
• B. $H_2{S}_2{O}_7$
• C. All have same oxidation number for sulphur
• D. $H_{2}S{O}_4$

Answer 1

The correct option is C All have same oxidation number for sulphur

(i) Oxidation number of S in $H_{2}S{O}_4$:
$+2+x-8=0x=+6$

(ii) Oxidation number of S in $S{O}_3$:
$x-6=0x=+6$

(iii) Oxidation number of S in $H_2{S}_2{O}_7$:
$2+2x-14=02x=+12x=+6$

Hence, option (d) is correct.