3+ 与SCN - 的显色反应检测内燃机车 冷却液中的亚硝酸钠 茹更生 (郑州铁路局机务处郑州 李瑞英 (郑州铁路分局郑州450052)450052) 关键词检测冷却液亚硝酸钠 中图分类号O657132 标样(NaNO2标准溶液:200mgƒL);硫脲: 12%;HAc:215molƒL;硫酸铁铵:6%;A或B试 样(稀释10倍后的新配制或使用中的冷却液)...
underset("अधिकता में खून जेसा लाल रंग (A)")(Fe^(3+)+SCN^(-)to[Fe(SCN)(2)(H(2)O)(5)]^(2+) underset((A))([Fe(SCN)(H(2)O)(5)]^(2+)+6F^(-))to underset("रंगीन")([FeF(6)]^(3-))+
(C12H22O11), urea (N2H4CO), Sodium chloride (NaCl), potassium iodide (KI), potassium bromide (KBr), sodium carbonate (Na2CO3), sulphuric acid (H2SO4), nitric acid (HNO3), phosphoric acid (H3PO4), ammonium thiocyanate (NH4SCN) and ascorbic acid (C6H8O6) was purchased from Merk ...
To extract Ni(II), many researchers used ionic liquids such as Cyphos IL 101 and Task-Specific Ionic Liquids (TSILs) with thiocyanate (SCN−), as well as Primene JMT-Cyanex 272 ionic liquid (Wellens et al., 2013; Boudesocque et al., 2020; Coll et al., 2012). The bi-functional...
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已知溶度积常数按 AgCl 、 AgSCN 、 AgBr 、 AgI 依次减小,判断它们溶解度最大的是 ( ) A. AgCl B. AgBr C. AgI D. AgSCN 查看完整题目与答案 凡以温里祛寒为主要功效,常用于治疗里寒证的药物,称为温里药。 A. 正确 B. 错误 查看完整题目与答案 凡以温里祛寒为主要功效,常用于治...
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Colour White Trademark Richwin Specification CE Origin China HS Code 8504403090 Product Description Pure sine wave inverter1) Main features1. Quiet, high efficiency operation2. Front panel LED indicators and adjustable switch selectors3. Selectable settings for flooded lead acid, gel, or absor...
IB3 ID4 ID3 0 0 MUX4 0 0 0 MUX3 1 IB2 ID2 0 0 MUX2 1 NW4 NW3 0 DC0 0 AP2 00 DCLT0 0 DTE 0 SRTN 0 0 0 0 0 0 0 DCL3 1 CM 0 RTN3 0 0 0 VRH3 1 0 0 NW2 0 AP1 1 DCL2 0 0 0 RTN2 0 VRC2 1 VRH2 0 0 0 SCN4 SCN3 SCN2 00 00 00 0 0 0 ID0...