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鉬酸鈉是鉬的重要化合物。有关鉬酸鈉的水盐体系,仅仅知道它和K_2MoO_4,Li_2MoO_4及MgMoO_4生成复盐;与硫化鈉生成硫代鉬酸盐;与Na_2CrO_4生成連續固溶体,Na_2MoO_410H_2O与Na_2SO_4·10H_2O生成有限固溶体;与Na_2Co_3,NaCl,Na_2SO_4(无水),NaClO_3(NaBrO_3,NaIO_3),NaNO_3和Ag_2MoO_4則既不形成固溶体,又不形成化合物。由于酣酸鈉难于分析准确,所以有关醋酸鈉的体系研究得很少,在无机物方面,只知道它和NaCl在水中既不形成固溶体,又不形成化合物。本文通过測定溶解度,测定飽和溶液的物理——化学性质及晶体的显微照相研究25°时Na_2MoO_4-NaAc-H_2O体系。
Sodium molybdate is an important compound of molybdenum. The sodium salt of sodium molybdate is only known to form double salts with K 2 MoO 4, Li 2 MoO 4 and MgMoO 4, thiomolybdate with sodium sulfide, continuous solid solution with Na 2 CrO 4, limited solid solution with Na 2 MoO 4 O 10H 2 O and Na 2 SO 4 · 10H 2 O, NaCl, Na_2SO_4 (anhydrous), NaClO_3 (NaBrO_3, NaIO_3), NaNO_3 and Ag_2MoO_4 neither form solid solution nor form compound. Since sodium sodium formate is difficult to analyze accurately, the system of sodium acetate has been studied very little. In terms of inorganic matter, it is only known that NaCl and NaCl form neither a solid solution nor a compound in water. In this paper, the Na_2MoO_4-NaAc-H_2O system at 25 ° C was studied by measuring the solubility, determining the physico-chemical properties of the saturated solution and the micrographs of the crystals.