Thiosulphuric acid $H_{2} S_{2} O_{3}$ has structure similar to that of sulphuric acid except that the terminal oxygen atom has been replaced by a sulphur atom. Which of the following physical and chemical properties of thiosulphuric acid and sulphuric acid are likely to differ

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

Thiosulphuric acid is less stable than sulphuric acid

Thiosulphuric acid is good reducing agent while conc sulphuric acid act as oxidizing acid

Boiling point of $H_{2} S_{2} O_{3}$ is less than $H_{2} S O_{4}$

Thiosulphuric acid is less acidic than sulphuric acid

answer is A, B, C, D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Due to the replacement of one of the oxygen atom in sulphuric acid with sulphur atom , it should be expected that aqueous solution of $H_{2} S_{2} O_{3}$ should be less acidic since more negative oxygen atom is replaced by less electronegativity sulphur atom. Since hydrogen bonding decreases in $H_{2} S_{2} O_{3}$ compared to $H_{2} S O_{4}$ due to replacement of more electronegativity oxygen atom by less electronegativity sulphur atom boiling point of $H_{2} S_{2} O_{3}$ might be expected lesser than $H_{2} S O_{4}$ .