water in water hydrolytic dissociation;;

in water reaction of concd. NaCl-solution with soln. of oxalic acid in excess;; pptn.;;

in water reaction of hot NaCl-solution with (NH4)2C2O4;;

in not given reaction of NaCl with HCl and MgC2O4;;

activation energy of the water flip motion; Thermodynamic data;

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in water boiling;; oxalic acid recycled by reation of CaC2O4 with H2SO4;;

in neat (no solvent) heating;;

in water crystn. on evapn. of an Al(OH)3 (satd. in the heat) and filtrated soln. of NaHC2O4 on a water-bath or by covering with a layer of alcohol;; addn. of a small amount of NaHC2O4 to prevent inclusion of Al2O3 in the crystals; recrystn. from aq. alcohol; impurities of Na-oxalate;;

in water a mixture of NaHC2O4 and oxalic acid with the 3 - 4 fold amount of H2O is refluxed for 60 h; product pptd. on cooling;; the crystals are heated in their mother liquor with little OsO4 until the smell of OsO4 disappears; pure crystals are pptd. when soln. is cooled down; a second fraction is isolated from mother liquor after pptng. H2C2O4 with CaCl2;;