a CH3CCH + b H2O = c CO + d H2 Step 2: Create a System of Equations Create an equation for each element (C, H, O) where each term represents the number of atoms of the element in each reactant or product. C: 3a + 0b = 1c + 0d H: 4a + 2b = 0c + 2d O: 0a + ...
羟基、羰基 NaOH水溶液,加热 取代反应(或水解反应) 2+O22+2H2O C10H15NO 5 CH3CH2OHCH3CHO [解析] [分析] 与Br2在NHS的作用下发生取代反应,生成和HBr;在NaOH水溶液、加热条件下发生水解反应,生成;在Cu、∆条件下发生催化氧化反应,生成;与NaC≡CH、H+作用下,发生加成反应、酸化反应,生成; 与H2O在HgSO4的...
“麻黄素”是中枢神经兴奋剂,其合成路线如图所示:已知:CH3CCH+H2O(1)F中的官能团的名称为__。(2)B→C的反应条件是__,反应类型是__,E的结构简式为__。(3)写出C→D的化学反应方程式__。(4)麻黄素的分子式为__。(5)H是G的同系物,也含醇羟基和碳氮双键,相对分子质量比G小28,且苯环上仅有一个侧链,...
, Photocatalytic hydrogenation of CH3OH wit h H2O on small - particle TiO2 :Size quantization effects and reac2 tion intermediates [J ] . Chem , 1987 ,91 :4305～4310Photocatalytic hydrogenation of propyne with water on small-particle titania: size quantization effects and reaction intermediates. ...
H2O 1 18.01528 Balance Equation Calculate Reaction Stoichiometry This calculator will determine the limiting reagent of a reaction.🛠️ Equation Editor Calculate Limiting Reagent ➜ Instructions To calculate the limiting reagent, enter an equation of a chemical reaction and ...
H2O418.01528 产品 丙酸二氧化锰氢氧化钾 CH3COHCHOH374.07854 MnO2286.936845 KOH256.10564 这个计算器将确定反应的限制试剂。 Instructions To calculate the limiting reagent, enter an equation of a chemical reaction and press the Start button. The reactants and products, along...
“麻黄素”是中枢神经兴奋剂,其合成路线如图所示:已知:CH3C=CH+H2O(1)F中的官能团的名称为__。(2)B→C的反应条件是__,反应类型是__,E的结构简式为_
“麻黄素”是中枢神经兴奋剂,其合成路线如图所示:已知:CH3C=CH+H2O(H_8SO_4)/(H_2O)(1)F中的官能团的名称为__。(2)B→C的反应条件是__,反应类型是__,E的结构简式为__。(3)写出C→D的化学反应方程式__。(4)麻黄素的分子式为__。(5)H是G的同系物,也含醇羟基和碳氮双键,相对分子质量比...
A. Fe3++3H2O?Fe(OH)3↓+3H+ B. NH4++2H2O?NH3•H2O+H3O+ C. CH3COOH+H2O?CH3COO-+H3O+ D. Br-+H2O?HBr+OH- 2.已知某反应的△H=+169.8kJ•mol-1下列有关该反应的叙述正确的是( ) A. 正反应活化能小于169.8kJ•mol-1 B. 逆反应活化能一定小于169.8kJ•mol-1 C. 正反应...
替换不可改变的组以避免歧义。例如,C6H5C2H5 + O2 = C6H5OH + CO2 + H2O不能被平衡,但XC2H5 + O2 = XOH + CO2 + H2O可以。 不需要复合状态[如(s)(aq)或(g)]。 你可以用小括号()或括号[ ]。 例子 N2 + Cu + H2O = NH3 + CuO ...