Sulphur and its Compounds
Sulphur and its compounds
General properties:
•Group
VIA (1s22s22p63s23p4)
•m.p. 113oC, b.p. 445oC
•Allotropes:
–(1) Rhombic sulphur, S8 (room
to 96oC)
–(2) Monoclinic sulphur, S8
(stable btn. 96-119oC)
–(3) Plastic sulphur, long polymeric chains.
Sulphur dioxide
•A colourless gas with
choking smell
•An acidic gaseous
pollutant
•Readily liquefied under
pressure
•Very soluble in water
and reacts to form sulphuric(IV) acid
•Can be further oxidized
to SO3, which
dissolves in water to form sulphuric(VI) acid, H2SO4
Oxidizing properties of SO2
•2Mg + SO2 ® 2MgO + S
•2H2S + SO2 ® 2H2O + 3S
•Aqueous SO2 º SO32-(aq)
•2MnO4- + 5SO32- + 6H+ ® 2Mn2+ + 5SO42- + 3H2O
•Cr2O72- + 3SO32- + 8H+ ® 2Cr3+ + 3SO42- + 4H2O
To read complete topic click here .........................
Chemistry topics ........
sharma sir,scceducation,scc,ssc,free cbse notes,free study material,maths,mathematics,science,Sulphur and its Compounds,Sulphur and its Compounds,Sulphur and its Compounds
0 comments:
Post a Comment