The concentration regions of prevalence of various chemical interactions in the Cu(NO 3 ) 2 , (H + )-NH 3 路H 2 O-H 2 O system were determined by dilatometry, pH-metry, and electronic spectroscopy of solutions and by X-ray phase and gravimetric analyses of precipitates. The adequacy ...
有下列几种物种:I-、NH3middot;H2O、CN-和S2-; (1)当()存在时,Ag+的氧化能力最强; (2)当()存在时,Ag的还原能力最强。
尿素的水解反应如下:CO(NH2)2+H2Orarr;2NH3+CO2 无酶存在时反应的活化能为120kJmiddot;mol-1。当尿素酶存在时,反应的活化能降为46kJmiddot;mol-1。设有、无酶存在时反应的频率因子A值相同。 试计算: (1)在298K时,由于尿素酶的催化作用,反应速率是无酶存在时的多少倍? (2)无酶存在时,温度要升高到何...
下列离子方程式正确的是( ) A.Na2S2O3溶液中加入稀硫酸:2S2O +2H+===SO +3S↓+H2O B.向NH4HSO3溶液中滴加少量KOH溶液:NH +OH-===NH3·H2O C.盐碱地(含较多NaCl
A .等体积等物质的量浓度的氢氧化钡溶液与碳酸氢铵溶液混合: Ba 2 ++ 2OH -+ NH + HCO == =BaCO 3↓+ NH 3·H 2 O+ H 2 O B .实验室配制的亚铁盐溶液在空气中被氧化: 4Fe 2 ++ O 2 + 2H 2 O == =4Fe 3 ++ 4OH - C .向碳酸氢铵溶液中加过量石灰水并加热: NH + OH - ...
深蓝色的硫酸四氨合铜晶体受热分解的化学方程式为: 3[Cu(NH3)4]SO4·H2O3Cu + 8NH3↑ + 2N2↑ + 3SO2↑ + 9H2O,下列分析正确的是 A.1mol[Cu(NH3)4]SO4·H2O分解产生气体体积为97.1L B.生成
百度试题 结果1 题目Mg(OH)2(s)在下列溶液中,溶解度最大的是()A. NH3middot;H2OB、MgCl2C、HAcD、H2O相关知识点: 试题来源: 解析 C 反馈 收藏
vibrational spectroscopyDifferential scanning calorimetric and coupled thermal differential and thermogravimetric analysis studies of propylenediammonium hexachlorobismuthate dihydrate, [NH3(CH2)3NH3]3(BiCl6)2路2H2O2, crystals are reported. This compound undergoes dehydration at high temperatures. The infrared...
Tetraammonium Diglycinyl‐octamolybdate(VI) Dihydrate, (NH4)4[(NH3CH2CO)2(Mo8O28)]?·?2?H2O[J] . GuangLiu,Shi‐WeiZhang,You‐QiTang.Z. anorg. allg. Chem. . 2001 (5)Jheng Y-Q, Lin JL, Sun JZ (2001) Anorg Allg Chem 627:1059...
The hydrolysis of the iron nitrosyl complex {Fe 2 [S(CH 2 ) 2 NH 3 ] 2 (NO) 4 }SO 4 路2.5H 2 O (CysAm) in water is not accompanied by the formation of its monomer form and is a reversible process. According to the ESR, 1 H NMR, and spectrophotometric data, the dissolution...