Question

Q.15 Write molecular and structural formulae of:
a) Dithionous acid b) oleum c) Dithionic acid​

Answer 1

a)Dithionous acid is a sulfur oxoacid with the chemical formula H₂S₂O₄. It is unstable in pure form, but its salts, known as dithionites, are stable. It was initially assumed that the C₂ symmetric structure HOS-SOH is the most stable among molecules with the formula H ₂S ₂O ₄ using ab initio calculations.

b)Disulfuric acid or pyrosulfuric acid, also named oleum, is an oxyacid of sulfur. It is a major constituent of fuming sulfuric acid, oleum, and this is how most chemists encounter it

c)Dithionic acid, H₂S₂O₆, is a chemical compound known only in solution.

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