答案解析 查看更多优质解析 解答一 举报 Mn和Cr都能与O2反应在常温下,Mn和Cr就能与O2缓慢反应,而在其表面形成氧化膜2Mn+O2=2MnO4Cr+3O2=2Cr2O3加热后上述反应加快 解析看不懂?免费查看同类题视频解析查看解答 更多答案(1) 相似问题 化学方程式配平,已知反应中有O2,H2Cro4,Cr(OH)3,H2O,H2O2 Mn2O7会...
如图所示，上下两个氨基应该是对称的，画不好。。
CrO3 + 4H2O2 === Cr2O3 + 4H2O + 4O2↑ CrO3 + 3H2O2 + 3NH3 === (NH3)3CrO4 + 3H2O + O2↑ CrO3(冷稀) + H2O2 + Ba(OH)2=== BaCrO5 + 2H2O 2CrO3 + 3H2O2 + 6HClO4 ===加热== 2Cr(ClO4)3 + 3O2↑+ 6H2O 2CrO3 + 3H2O2 + 3H2SO4 === Cr2(SO4)3 +...
以Fe-Cr-O2系为例,用FactSage绘制恒温时氧分压随合金成分变化的相图 打开FactSage软件的Phase Diagram相图计算模块,在Components栏下输入第一个组分Fe后,再点击+依次输入另外两个组分Cr和O2。打开Units窗口选择合适的单位,这里温度选择K,质量选择mol为单位。对于Fe-Cr-O2体系,Data Search窗口中选择氧化物数据库[FT...
In this work (Cr,V,Ti)O2 solid solutions with rich-TiO 2 compositions have been synthesized. Green samples and samples after each calcination have been characterized by X-Ray diffraction at room temperature, UV-V spectroscopy and electronic microscopy, in order to confirm the stability of these...
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Besides, the hydroxy (O2) was also got a growth of 5%. It indicates active species like oxyhydroxides were generated during the oxygen evolution, and thus further improve the catalytic activity. Figure 7 XPS data of ESS and Cr–FeNi LDH @ ESS sample after i-t test. (a) Ni 2p 3/2,...
一氨·氧·过氧根·二氰合铬(IV）离子
14.参考答案(1)① 2CrO_4^(2-)+3HS^-+5H_2O2Cr(OH), ↓+3S↓+7OH^- ②S2过量,水溶液中S2能与单质硫反应生成S2,S2能还原 Cr(VI),所以反应后期Cr(M)被还原的速率反而加快可以在不同反应时间但相同反应时长的条件下,观察溶液褪色程度(合理答案均可)(2)Zn-Cu粉在溶液中形成原电池,加快反应速率...
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