10%HNO3+tr.HCl 12种多元素混合标准溶液(砷、钙、铜、铁、汞、钾、镁、锰、钠、磷、铅、锌) 50ml 1000(µg/mL 5%HNO3 13种多元素混合标准溶液(锰、锂、铝、钙、钴、铬、铜、铁、钾、镁、钠、镍、锌) 50ml 2%HNO3 原子吸收分光光度计检定用镉溶液标准物质(Cd) 50ml 0.5(ng/mL) 2%HNO3 原子荧光...
(2)①氯化锌会水解,SOCl2作脱水剂,与水反应生成HCl可以抑制氯化锌的水解,SOCl2在该实验中的作用是:SOCl2作脱水剂,与水反应生成HCl可以抑制氯化锌的水解;故答案为:SOCl2作脱水剂,与水反应生成HCl可以抑制氯化锌的水解; ②用NaOH溶液吸收SOCl2,有Na2SO3和NaCl生成,反应的离子方程式:SOCl2+4OH-=SO32-+2Cl-+2H2O...
故答案为:Mn2+;BiO3-;2MnO4-+5Bi3++7H2O。12.氧化还原反应在物质制备、能量转化方面有重要的应用。⑴反应I2+2Na2S2O3=Na2S4O6+2NaI常用于测定溶液中I2的含量。反应的氧化剂是___,每生成1molNa2S4O6,反应转移电子为___mol。⑵ClO2是一种新型净水剂,一种制取ClO2的反应如下:KClO3+HCl(浓)-KCl+Cl2↑...
Within 1 min, HCl solution was added (3 mL). The reaction proceeded at room temperature for 20 min. The absorbance at 500 nm was measured using catechin as the standard. The total flavones content was expressed as grams of catechin equivalent per litre of sample. 2.5. Analyses of ...
Enhanced steam pretreatment of wheat straw for enzymatic hydrolysis by hcl and so2 additionPROTEIN DISULFIDE ISOMERASE (PDICHROMOSOME-IIIYEASTNo abstract is available for this article.doi:10.1002/abio.370110220Z.DepartmentTargońskiDepartmentJohn Wiley & Sons, Ltd.Acta Biotechnologica...
1BiOCl是一种具有珠光泽的材料,利用金属Bi制备BiOCl的工艺流程如图:稀HNO3稀HCl+NaCl(s)H2O金属Bi→酸浸转化水解分离BiOCl下列说法错误的是 A. 酸浸工序中分次加入稀HNO3可降低反应剧烈程度 B. 转化工序中加入稀HCl可抑制生成BiONO3 C. 水解工序中加入少量CH3COONa(s)可提高Bi3+水解程度 D. 水解工序中加入少...
2.D 氧化还原反应、陌生方程式的书写 反应I中反应 物为 CuCl_2 和O2,生成物为CuO和Cl2,反应I的化学 方程式为 2CuCl_2+O_2=2Cu()+2Cl_2 ,该反应中Cl、 O元素的化合价均发生变化,故该反应为氧化还原反 应;反应Ⅱ中反应物为HCl和CuO,生成物为CuCl2和 H2O,反应Ⅱ的化学方程式为 CuO+2HCl=CuCl_2+ H_...
BCO2(HCl)饱和Na2CO3溶液洗气 CMg (Al)过量稀盐酸过滤 DFeCl2溶液(FeCl3)足量Fe粉过滤 A.AB.BC.CD.D 2018/02/25|223次组卷 纠错详情加入试题篮 多选题-2个答案|适中 (0.65) 名校 【推荐2】铋(Bi)和铟(In)均属于新型半导体材料,从某富铋、铟渣(含Bi2O3、In2O3和ZnO)中提炼铋、铟的部分流程如图所...
c = 1 (Ba(NO2)2) d = 1 (H2O) f = 1 (SO2) Step 4: Substitute Coefficients and Verify Result Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. ...
Mercury has attracted more and more attentions due to its characteristics of high toxicity, easy to volatility and bio-enrichment [1], [2]. It has been listed as the only global gaseous pollutant except greenhouse gases. 87 countries and territories including China signed the Minamata Convention ...