家蝇的雌性信息素可用芥酸(来自菜籽油)与羧酸X在浓NaOH溶液中进行阳极氧化得到。电解总反应式为: 则下列说法错误的是 A.X的结构简式为C2H5COOH B.电解的阳极反应式为:C21H41COOH+X+ 6OH--2e-→C23H46+2CO32-+4H2O C.该反应中所有碳原子均被氧化,每转移1mole-生成0.5mol雌性信息素 ...
某化学式为C3H6O2的有机物在一定条件下能与NaOH反应,其核磁共振氢谱出现两个信号蜂,则该有机物的结构简式可能是 A. C2H5COOH B. CH3COOCH3 C. HCOOC2H5 D. CH3COCH2OH 相关知识点: 有机化合物 有机化合物的总论 有机物的基本性质 研究有机化合物的一般步骤和方法 有机物结构的推断 质谱仪、核磁共...
NaOH + NO2 + O2 = Na2O2 + HNO3 K2SO3 + H2SO4 = K2SO3 + H2SO4 ZnO + NH4Cl = ZnCl2 + H2O + N + Zn BaN6 = N + Ba CU + HNO3 = CU(NO3) + NO + H2O (NH2)2CO + HNO2 = CO2 + H2O + N2 CrCl3 + AgNo3 = Cr(No3)3 + AgCl Recently Balanced Eq...
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:2a +2b =3c +0dH:6a +6b =6c +20dO:2a +1b =2c +0d ...
在①Ca(HCO3)2;②Al2O3;③KAlO2;④C2H5OH;⑤CH-CH -COOHNH⑥Al这六种物质中,既能与强酸溶液(如HCl),又能与强碱溶液(如NaOH)反应的有 . 答案 ①②⑤⑥【解答】解:①Ca(HCO3)2属于弱酸酸式盐,既能与酸反应,生成CO2气体,又能与碱反应,生成盐,故①符合;②Al2O3是两性氧化物,既能与酸反应,生...
用0.1000mol/L NaOH滴定同浓度丙酸(C2H5COOH的pKa=4.87)的pH突跃范围为7.87～9.70,若将两者的浓度均增大10倍,pH突跃范围为( )。A.6.87～9.70B.6.87～10.70C.7.87～10.70D.8.87～10.70的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找
(5)能发生银镜反应,说明含有醛基或甲酸酯基,能发生水解反应且水解产物之一能与FeCl3溶液发生显色反应,说明含有酚酯基,又1 mol该物质最多能与8 mol NaOH反应,故满足条件的G的同分异构体有、、3种。反馈 收藏
a = 20 (C2H5OH) b = 5 (HCOOH) c = 15 (C2H5COOH) d = 2 (H20) Step 4: Substitute Coefficients and Verify Result Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. ...
aC2H5OOC2H5+bH2O =cC2H5OH +dC2H5COOH 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:4a +0b=2c +3dH:10a +2b =6c +6dO:2a +1b =1c ...
[答案]酚酞 23.70 ②④ 圆底烧瓶 ③ 0.192[详解](一)(1)NaOH与醋酸反应生成的醋酸钠属于强碱弱酸盐,其水溶液呈碱性,因此滴定过程选用酚酞作指示剂;(2)由图可知,滴定终点读数为24.90mL,则滴定过程中消耗标准液=24.90mL-1.2mL=23.70mL;(3)滴定过程中反应为NaOH+CH3COOH=CH3COONa+H2O,反应结束时满足n(CH3COOH)...