15.25℃时,己知CaCzCh的Kp=5.0X10-9,H22O4的Kai=5.6X104心=L5Xl(r»。 则在25C时下列有关说法正确的是 A.22。/-+Ca2++HO-OH+HC2O/+CaCO及=3.3X10-2 224 B.HC2O4+OH+Ca2+^HO+CaCO4K=15此时可以认为反应进行完全 22 2 C.HCO4+C2O4=2HC2O4-K=3.7 22 D.把CaCzCU固体溶于pH=4.8的CH3oO...
4000mmH2o PMP75-ACA1HB1B4AAA PTC31-A2A11P1AE1A RIA250-A11G21 RIA452-A111A11A RID261-A12 RTA421-A11A T12656-P1A1A1AVA L1=700mm,L2=200mm TA730-X3R, X = 265mm TMT184-A31BA TR10-AAA1CCSDIG000 TR10-AAA3CASDR3000 , 0-100/0-200C TR10-AAD3BHSFFG000 ...
Furthermore, Nb2O5-doped WO3 films that have a less negative effect for electrochromic properties and a high durability were selected and integrated into an all-solid-state electrochromic device (ASSECD), according to the laminar structure design of glass/ITO/WO3–Nb2O5/Nb2O5/NiVOx/ITO. ...
18.(14分)草酸(H2C2O4)是植物中普遍含有的成分,具有广泛的用途。常温下其电离常数为Ka1 = 5.6×10-2,Ka2 = 1.5×10-4 。请回答下列问题:(1)H2C2O4的电离方程式为:H2C2O4 x HC2O4- + H+、___。(2)使H2C2O4的电离平衡向右移动且电离程度增大的措施有___(写一个)。(3)设计实验证明H2C2O4为弱酸的方...