Natrijum sulfat — разлика између измена

CrystalsKristali ofdekahidrata these decahydratesastoje consistod ofjona [Na(OH₂)₆]⁺ ions with [[octahedral molecular geometry|oktaedarske molekularne geometrije]].<ref>{{Cite web |title=Trigonal bipyramidal molecular shape @ Chemistry Dictionary & Glossary |url=https://glossary.periodni.com/glossary.php?en=trigonal+bipyramidal+molecular+shape#:~:text=Octahedral%20molecular%20geometry%20(square%20bipyramidal,to%20be%20a%20regular%20octahedron. |access-date=2022-07-03 |website=glossary.periodni.com}}</ref><ref>{{cite book|last=Von Zelewsky|first=A.|title=Stereochemistry of Coordination Compounds|publisher=John Wiley|location=Chichester|date=1995|isbn=0-471-95599-X|url-access=registration|url=https://archive.org/details/stereochemistryo0000zele}}</ref> TheseOvi octahedraoktaedri sharedele edgesivice suchtako thatda je 8 of theod 10 watermolekula moleculesvode arevezano boundza tonatrijum, sodium anda 2 othersdruga aresu interstitialintersticijalna, beingjer hydrogen-bondedsu tovezana sulfate.vodonikom Theseza cationssulfat. areOvi linkedkatjoni tosu thepovezani sulfatesa anionssulfatnim byanjonima [[hydrogen bond|vodoničnim vezama]]s. TheUdaljenosti Na–O distancessu are aboutoko 240&nbsp;[[picometer|pm]].<ref>Helena W. Ruben, David H. Templeton, Robert D. Rosenstein, Ivar Olovsson, "Crystal Structure and Entropy of Sodium Sulfate Decahydrate", J. Am. Chem. Soc. 1961, volume 83, pp. 820–824. {{doi|10.1021/ja01465a019}}.</ref> CrystallineKristalni sodiumnatrijum sulfatesulfat decahydratedekahidrat isje alsotakođe unusualneobičan amongmeđu hydratedhidratisanim saltssolima injer havingima a measurablemerljivu [[residual entropy|rezidualnu entropiju]] (entropyentropiju atna [[absolute zero|apsolutnoj nuli]]) ofod 6.,32&nbsp; J/(K·mol). ThisOvo isse ascribedpripisuje tonjegovoj itssposobnosti abilityda todistribuira distributevodu watermnogo muchbrže moreu rapidlypoređenju compared tosa mostvećinom hydrateshidrata.<ref name=Brodale1957>{{cite journal |last=Brodale |first=G. |author2=W.&nbsp;F. Giauque |title=The Heat of Hydration of Sodium Sulfate. Low Temperature Heat Capacity and Entropy of Sodium Sulfate Decahydrate |journal=[[Journal of the American Chemical Society]] |volume=80 |issue=9 |pages=2042–2044 |year=1958 |doi=10.1021/ja01542a003}}</ref>