The crystal structure of Ca2Al(OH)6Cl · 2H2O was determined by single crystal structure analysis (M = 433.344, C2/c, a0 = 9.979(3) , b0 = 5.751(2) ,c0 = 16.320(6) , β = 104.53(3)°, V = 906.64 3, Z = 4, Dx = 2.056 g/cm3*, MoKα = 0.70926, μ = 16.276 cm1, ...
Introduction "Friedels salt" Ca2Al(OH)6Cl · 2HzO is a representative of a class of compounds which crystallize in layer structures (Ahmed et al., 1968; Kuzel, 1968; Allmann, 1977). The structures are based on distorted brucite-like main layers [Ca2Al(OH)6]+ which are separated in ...
2Cl;(2)4个五氧化二磷分子 4P2O5;(3)纯碱 Na2CO3;(4)氢氧化钙在水中电离出的离子是 Ca2+和OH-.(5)氯化钠是由 Na+和 Cl-构成.(6)铝片在空气中,生成致密的氧化铝薄膜,反应的化学方程式是 2Al+3O2═Al2O3; 试题答案 分析:原子用元素符号来表示.化学符号前面的数字表示粒子的个数.化学式中元素符号...
Be(OH)2+2NaOH=Na2BeO2+2H2O。答案解:(1)同周期主族元素随原子序数增大电负性增大,故电负性:C<N<O;同周期主族元素随原子序数增大第一电离能呈增大趋势,但N元素原子2p轨道为半充满稳定状态,第一电离能高于同周期相邻元素的,故第一电离能:C<O<N,故...
A、氯气与水反应:Cl2+H2O=2H++Cl-+ClO- B、KAl(SO4)2中滴加Ba(OH)2使SO42-恰好完全沉淀2Al3++3 SO42-+3 Ba2++6 OH-=2Al(OH)3↓+3BaSO4↓ C、将少量硝酸银溶液滴入氨水中:Ag++2NH3?H2O═[Ag(NH3)2]++2H2O D、碳酸氢钠溶液中加入过量的石灰水:Ca2++2HCO3-+2OH-=CaCO3↓+CO32-+2...
解答:解:A.氯气与水的反应生成次氯酸,次氯酸不能拆开,正确的离子方程为:Cl2+H2O═Cl-+HClO+H+,故A错误; B.Ba(OH)2溶液与稀H2SO4反应生成硫酸钡沉淀和水,正确的离子方程式为:2H++SO42-+Ba2++2OH-=BaSO4↓+2H2O,故B错误; C.足量NaHCO3溶液中加少量澄清石灰水,氢氧化钙不足,碳酸氢钠过量,则反应...
下列反应的离子方程式正确的是( )A.碳酸钙跟醋酸反应:CaCO3+2H+===Ca2++H2O+CO2↑B.硫酸铝溶液中加过量氨水:Al3++3NH3·H2O===Al(OH)3↓+3NHC.向足量的溴化亚铁溶液中通入少量的氯气:2Fe2++4Br-+3Cl2===2Fe3++2Br2+6Cl-D.碳酸氢钠溶液与足量的氢氧化钡溶液混合:Ba2++2OH
B.硫酸铝溶液中加过量氨水:Al3++3NH3·H2O===Al(OH)3↓+3NH C.向足量的溴化亚铁溶液中通入少量氯气:2Fe2++4Br-+3Cl2==2Fe3++2Br2+6Cl- D.碳酸氢钠溶液与足量的氢氧化钡溶液混合: Ba2++2OH-+2HCO===BaCO3↓+CO+2H2O 试题答案
下列离子方程式错误的是( )A.工业上用氯气通入石灰乳制漂白粉:2Ca(OH)2+Cl2=Ca(ClO)2+Ca2++Cl-+2H2OB.向污水中投放明矾,生成能凝聚悬浮物的粒子:Al3++3H2OAl(OH)3+3H+C.用Na2S除去
Insights on the structural chemistry of hydrocalumite and hydrotalcite-like materials: Investigation of the series Ca2M3+(OH)(6)Cl center dot 2H(2)O (M3+: Al3+, Ga3+, Fe3+, and Sc3+) by X-ray powder diffraction 机译:水硬钙石和类水滑石材料的结构化学见解:通过X射线粉末衍射研究Ca2M3 ...