Post on 05-Jan-2016
description
S – SulphurS – Sulphur
By Hana Guryčová & Eliška Chytilová
The essentialsThe essentials
Name: Sulphur Symbol: S Atomic number: 16 Group number: 16 (IV.A) Group name: Chalcogen Period number: 3 Electron configuration: [Ne] 3s2 3p4 1s2 2s2 2p6 3s2 3p4
The Essentials – základní informace
DescriptionDescription
Here is a brief description of sulphur:
Standard state: Solid Melting point: 115,21°C Boiling point:444,72°C Colour: Lemon yellow Classification: Non-metallic
Description – popis
Allotrope of sulphurAllotrope of sulphur
Rhombic sulphur Prismatic sulphur Liquid sulphur and brown vapours Sulphur flowers Plastic sulphur
Allotrope – alotropické modifikace Rhombic - kosočtverečná Prismatic - jednoklonná
DistributionDistribution
1. Elementary sulphur: volcanic activity hot springs
DistributionDistribution
2. Compounds: sphalerite ZnS pyrite FeS2
cinnabar HgS galenite PbS
ApplicationApplication
1.In ancient time (China) – component of gunpowder 2. At the present time – fireworks– vulcanisation– manufacture of sulphuric acid– battery– fungicide
Gunpowder- střelný prachFireworks- zábavní pyrotechnikaFungicide- prostředky působící proti růstu hub a plísní
BiologicalBiological role role Sulfur is an important component of:
amino acids cysteine and methionine
polypeptides, proteins, enzymes
coenzyme A
Some forms of bacteria use
hydrogen sulfide (H2S)
Environmental ImpactEnvironmental ImpactBurning of coal and petroleum
sulfur dioxide SO2
atmospheric water and oxygen
sulfuric acid = acid rain
! lowers the pH of soil and freshwater
bodies !
Reaction of sulphurReaction of sulphur For Example:Sulphur burns in air to form the gaseous
dioxide sulphur dioxide, SO2
S8(s) + 8O2(g) ––> 8SO2(s) Others: H2S + I2 ––> S + 2HI SO2 + 2CO ––> S + 2CO2 CuO + H2SO4
––> CuSO4 + H2O Zn + H2SO4
––> ZnSO4 + H2
SO3 + H2O ––> H2SO4
MgSO3 ––> MgO + SO2
Thank you very much Thank you very much for your kind attentionfor your kind attention