Balance the following reaction and identify the acid, base, and salt. HCl(aq) + Ca(OH)2(aq) arrow H2O(l) + CaCl2(aq) Write the balanced molecular, total ionic, net ionic equations for the reaction between sodium sulfate and strontium nitrate. Identify any spectator ions. ...
of the ferroelastic transition between rutile-type and CaCl2type SiO2 52. Gonze, X. & Lee, C. Y. Dynamical matrices, Born effective charges, dielectric permittivity tensors, and interatomic force constants from density-functional perturbation theory. Phys. Rev. B 55, 10355–10368 (1997). 53...
可见:能拆分的物质一般为强酸(如盐酸HCl)、强碱(如氢氧化钠NaOH)、和大多数可溶性盐(氯化钠NaCl).2)不能拆分的物质①难溶物不拆例l:向碳酸钙中加入过量盐酸.错误:CO32-+2H+=CO2+H2O原因:CaCO3难溶于水,像BaSO4、AgCl、Cu(OH)2、H2SiO3、FeS、CuS,等在书写离子方程式时均不能拆开,应写成化学式.正确:...
NaOH (pharma grade), HCl (pharma grade, 37%) CaCl2 (anhydrous, 95%), FeCl3·6H2O (97–102%) were from Panreac, while CaCl2·2H2O (ACS 99–105%) was supplied by Alfa Aesar and ibuprofen sodium salt (98%) was supplied by Sigma Aldrich, St. Louis, MO, USA. All were used as ...
粗盐中含有可溶性杂质CaCl2、MgCl2和Na2SO4,若要得到纯净的NaCl固体,有如下实验操作:①加入过量Na2CO3溶液、②加入过量NaOH溶液、③加入过量BaCl2溶液、④加入过量Ba(OH)2溶液、⑤加入过量盐酸、⑥过滤、⑦蒸发结晶.正确的实验操作顺序是( ) A.③②①⑤⑥⑦ B.③①②⑥⑤ C.④①⑥⑤⑦ D.②①③⑥⑤⑦ 查...