在本例中，计量系数表明了反应物和生成物的数量比例。例如，“2H2”表示两个氢分子参与反应，“O2”表示一个氧分子参与反应，而“点燃”表示反应的条件，“→”表示化学反应的方向，即反应物转化为生成物，“2H2O”表示生成了两个水分子。...
7.氢氧燃料电池已用于航天飞机.以30% KOH溶液为电解质溶液的这种电池在使用时的电极反应如下:2H2+4OH--4e-═4H2O.O2+2H2O+4e-═4OH-.据此作出判断.下列说法中正确的是( )A.H2在正极发生氧化反应B.供电时的总反应为:2H2+O2═2H2OC.燃料电池将H2燃烧放出的热能转化为电
H2S2O8可由电解法制得,阳极反应为2H2SO4→H2S2O8+2H++2e- 阳极副反应为O2的析出;阴极出氢效率为100%。已知电解产生H2、O2的气体体积分别为9.0L和2.24L(标准条件下),则生成H2S2O8的物质的量为()。 A.0.1mol B.0.2mol C.0.3mol D.0.4mol 点击查看答案手机看题 你可能感兴趣的试题 单项选择...
分子式:C20H26O2 分子量:298.42 PubChem编号:12951800 PubChem SID:504767289 货号(SKU)包装规格是否现货价格数量 D330735-100mg 100mg现货 现价:¥29.90 +- D330735-250mg 250mg现货 现价:¥49.90 +- D330735-1g 1g现货 现价:¥70.90 +- ...
用半反应式法(离子-电子法)配平下列方程式:(1)K2Cr2O7+H2S+H2SO4→K2SO4+Cr2(SO4)3+S+H2O(2)MnO4-+H2O2→O2+Mn2+(酸性溶液)(3)Zn+NO3-+OH-→NH3+Zn(OH)42-(4)Cr(OH)4-+H2O2→CrO42-(5)Hg+NO3-+H+→Hg22++NO
during the each step of cyclic processing was Si are shown in observed using Fig. 10a up to 5 AcyFcMlesaonfdetthcheiRngMaSnsdutrhfaec2eDroAuFgMhnseussrfvaacleureosuogbhsnerevssedimfoargeSsiOo2f,rSeif3eNre4n, acnesd, poly after reaction step, and after removal As shown in ...
+ H2O(l) (5) CO2(aq.) + 2H2O(l) ←3V→O2+ CH3OH(aq.) + 3OO0+,lattice (6) The kinetic reaction steps in Eqs. 1 and 3 demonstrate the lattice oxygen in and out at the catalyst/solution interface to hold the dynamic equilibrium and to keep CuMnOS behave as a catalyst ...
非金属单质(F2,Cl2,O2,S,N2,P,C,Si) 1,氧化性: F2+H2===2HF F2+Xe(过量)===XeF2 2F2(过量)+Xe===XeF4 nF2+2M===2MFn(表示大部分金属) 2F2+2H2O= 分享52 穿越火线吧 love7v3 3emnbbydvl2t8s3n2h9o8a5y 迷你宝贝码 分享5赞 穿越火线吧 love7v3 3emnbbydvl2t8s3n2h9o8a5y 迷你宝贝...
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Due to the reactivity of the studied hydrogen storage material with environmental contaminants (e.g., O2 and H2O), the thermal conductivity measurements were performed in an Ar filled glove box (Ar pressure 1.012 bar). The thermal conductivity sensor has a round, flat shape and its active ...