P-Block Elements Ques 501

Question: Sulphur in +3 oxidation state is present in

[DCE 2003]

Options:

A) Sulphurous acid

B) Pyrosulphuric acid

C) Dithionous acid

D) Thiosulphuric acid

Show Answer

Answer:

Correct Answer: C

Solution:

Dithionous acid (H2S2O4) has sulphur in +3 oxidation state. HOS||OS||OOH ; 2(+1)+2x+4(2)=0 2x=82=6 ; MnO2+4+4HClMnCl2+2+2H2O+Cl2



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