用离子-电子法配平下列反应式。 (1)P4+HNO3rarr;H3PO4+NO (2)H2O2+PbSrarr;PbSO4+H2O(酸性介质) (3)Cr3++H2O2
SGK-3-A1,PN10,G1/2-A,30-300 L/H H2O/tubesize:19,363MM sd2e-b3/s2d21 with 24V solenoid LeuzeBT8-01 Hawe NZP 16 CZ55/60 ProxitronIKL015.38GSA1(15m)2319Q-15C接近开关 Proxitron SCHUNK -E compact SK 40 .16.0, L1=64,5 0206415 1 SMI MG490154 Sigmatek DAI081 Stemmann-Technik...
36.[化学—有机化学基础](15分)药物H(阿戈美拉汀)是一种抗抑郁药,H的一种合成路线如下:OCH3B(CHO3)AICL3①AH_3CO^- CrcoH)(10NH_4⋅H_2ONOH)/(201+)C_(50)H_4O_3(H_2SO_4)/C_4H_4O_2 rac( CCNCNH3COH3COH3CONHCOCH3DDQ/CH2 Cl⑤(1)Hz/Rarcy-N_2)/2(CH_1CO_2) FGH...
Cross‐sections for the H + H2O → OH + H2and H + D2O → OD + HD abstraction reactionsThis paper was written as part of the EC Research Training Network on Reaction Dynamics (HPRN-CT-1999-00007). ...
15、带电荷的性质:负离子中性分子 例如:OH- H2O;RO- ROH 试剂的碱性:通常呈正比关系 例如:C2H5O- OH- C6H5O- CH3CO2-试剂的可极化性:极化性愈大,则亲核性愈强 例如:I- Br- Cl- ;RS- RO- 亲核试剂的亲核能力愈强、浓度愈大,越有利于按SN2反应进行,但对SN1反应无明显的影响。4、溶剂的极性 增大...
答案(1)H2 NH3+HClNH4Cl(2)SO2 H2S+OH-=HS-+H2O S+3Cl2+4H2O=H2SO4+6HCl解析由X,Y,Z为三个不同短周期非金属元素的单质。有了非金属单质的限定,题的难度就等于降低一半,又Y+XA(气),Y+ZB(气)(1)假设常温X、Y、Z三单质均为气体,A+BC冒出白烟,这一信息很明显确实定A、B分别为NH3、HCl、C为...
Accurate quantum calculation for the benchmark reaction H2+OH→H2O +H in five‐dimensional space: Reaction probabilities for J=0 A time‐dependent wave packet method has been employed to compute initial state‐specific total reaction probabilities for the benchmark reaction H2+OH→H2... ...
(CH2)CH=CH2-|||-,故答案-|||-r-|||-为:CH=CH(CHCH=CH-|||-化剂-|||-Br-|||-△【官能团的引入和转换】(1)C=C的形成:①一元卤代烃在强碱的醇溶液中消去HX;②醇在浓硫酸存在的条件下消去H2O;③炔烃加氢;④烷烃的热裂解和催化裂化.(2)C≡C的形成:①二元卤代烃在强碱的醇溶液中消去两分子的...
Answer to: Use standard enthalpies of formation to calculate Delta H*rxn for the following reaction. *Mg(OH)2(s)-->MgO(s)+H2O(g) By signing up,...
Item:FLOWMETER VARIABLE AREA SCALE 17-170 ML/S CO2 CSS 1/8IN NPTF INLET/OUTLET N285.0; SPEC:DK800R-1/8""NPT Item:FLOWMETER VARIABLE AREA SCALE 0.17-1.7 L/S H2O CSS 1 1/2IN FLANGED INLET/OUTLET N285.0 ; SPEC:H250/RR/M9 25-ANSI-RF11/2-150-316L Item:FLOWMETER VARIABLE AREA SCAL...