|
Atomistry » Sodium » Chemical Properties » Sodium tetrathionate | ||
Atomistry » Sodium » Chemical Properties » Sodium tetrathionate » |
Sodium tetrathionate, Na2S4O6
The Sodium tetrathionate is prepared from the thiosulphate either by the action of iodine or by oxidation with cupric chloride. It can be precipitated from solution by addition of alcohol. With sodium carbonate it yields sodium thiosulphate:
4Na2S4O6+5Na2CO3 = 7Na2S2O3+2Na2SO4+5CO2. The heat of formation in aqueous solution is given by Berthelot as 387.2 Cal. A dihydrate exists, its heat of solution being –9.5 Cal. The tetrathionate is converted by the action of sodium sulphite into trithionate and thiosulphate: Na2S4O6+Na2SO3=Na2S3O6+Na2S2O3. With alkali-metal cyanides the tetrathionate reacts in accordance with the equation Na2S4O6+3NaCN+H2O = NaCNS+Na2SO4+Na2S2O3+2HCN. At the boiling-point, in presence of excess of cyanide, the thiosulphate formed reacts further to produce thiocyanate and sulphite. |
Last articlesCa in 2RICCa in 2RIB Ca in 2RIA Ca in 2RF7 Ca in 2RI8 Ca in 2RI9 Ca in 2RGD Ca in 2RGE Ca in 2RGC Ca in 2RGB |
© Copyright 2008-2020 by atomistry.com | ||
Home | Site Map | Copyright | Contact us | Privacy |