Oxoacids of sulphur preparation and properties, Group 16 P Block Elements

Oxoacids of sulphur preparation and properties, Group 16 P Block Elements

Oxoacids of Sulphur :

Sulphur forms various oroacide like H2SO3, H2S2O3, H2S2O4, H2S2O5, H2SO4, H2SO5 etc. Some of these acids are unstable and cannot be isolated in free state. They are known in aqueous solution or in the form of their alts The wtructures of these oxyacids are given below.

Sulphurous acid (H2SO3): Free acid does not exist. dipratic, strong reducing agent.

Oxoacids of sulphur preparation and properties, Group 16 P Block Elements 1

Sulphurie Acid (H2SO2): (Oil of vitriol): Stable, diprotic, dehydrating agent.

Oxoacids of sulphur preparation and properties, Group 16 P Block Elements 2

Peroxomono sulphuric acid or Caro’s acid (H2SO5)

Oxoacids of sulphur preparation and properties, Group 16 P Block Elements 3

Peroxodisulphuric acid or Marshall’s acid (H2SO2O8)

Oxoacids of sulphur preparation and properties, Group 16 P Block Elements 4

Thiosulphurie acld (H2S2O3): Pree acid does not exist but its salte.g. Na2S2O3 is found. All quite stable reducing agent.

Oxoacids of sulphur preparation and properties, Group 16 P Block Elements 5

Dithionic acid (H2S2O6) : Free acid is moderately stable but its salts are quite stable.

Oxoacids of sulphur preparation and properties, Group 16 P Block Elements 6

Pyrosuiphuric acid or oleum (H2S2O7) or disuiphuric acid strong oxidizing agent.

Oxoacids of sulphur preparation and properties, Group 16 P Block Elements 7

Polythionic Acid (H2S4O6)

Oxoacids of sulphur preparation and properties, Group 16 P Block Elements 8

Dithionous acid (H2S2O4)

Oxoacids of sulphur preparation and properties, Group 16 P Block Elements 9

Chemistry Notes