NaOH + H2SO4 → NaHSO4 + H2O 氯化钠(食盐)和硫酸可在高温下反应,生成硫酸氢钠和氯化氢气体。 NaCl + H2SO4 → NaHSO4 + HCl 鉴别试验 按IT一29进行硫酸盐鉴别试验,呈阳性。 含量分析 精确称取试样约5g,溶于约125ml水中,加酚酞试液(TS-167)数滴,用1mol/L氢氧化钠滴定。每mL1mol/L氢氧化钠相当...
供应双通道的NaOH、HCL,在线NaOH、HCL,盐浓度计 价格:2.00元更多产品优惠价> 最小采购量:1 主营产品:PH计,溶氧仪,电导率仪,余氯,酸碱计,氨氮检测仪,在线COD 供应商:上海博取仪器有限公司 更多优质供应商> 所在地:中国 上海 联系人:向楠 您的联系方式已覆盖全网,展示在其他同类产品页面 联系商家 点...
A. NaOH溶液 B. AgNO3 C. 蒸馏水 D. 乙醇 查看完整题目与答案 下列除去杂质的操作中,不能达到目的是( ) A. 除去苯中的少量溴:加入CCl4萃取后分液 B. 除去乙烷中的乙烯:通入溴水中 C. 除去CO2中的少量HCl气体:通过盛有饱和NaHCO3溶液的洗气瓶 D. 除去FeCl2溶液中的少量FeCl3:加入足量Fe粉...
某学生做中和滴定实验的过程如下：①取一支碱式滴定管； ②用蒸馏水洗净；③加入待测的NaOH溶液；④记录液面刻 度读数；⑤用酸式滴定管精确放出一定量标准酸液；⑥置于 未经标准酸液润洗的洁净锥形瓶中；⑦加入适量蒸馏水； ⑧加入酚酞试液2滴；⑨滴定时，边滴边摇动；⑩边注视滴定 管内液面的变化；当刚...
The novel compound expressed by formula II can be obtained by subjecting a furan substitution product of furan expressed by formula II to the ring opening in the presence of an acid, e.g. HCl.NISHIMURA SHIYOUJIHIRAISHI KOUZOU
Every year, the poultry industry produces a large number of by-products such as chicken heads containing a considerable proportion of proteins, particularly collagen. To prepare gelatin is one of the possibilities to advantageously utilize these by-produ
添加TBHP水溶液,0℃下缓慢添加次氯酸钠,搅拌反应,分离并萃取,合并有机层,亚硫酸钠溶液处理2h后用氯铬酸吡啶鎓处理有机层,洗涤并蒸发有机层,纯化得浅黄色固体状化合物24,用Pd/C氢化还原环上的双键,并用三叔丁氧基氢化铝锂还原羰基得到化合物34,碱性条件下水解得脱氧胆酸粗品,纯化即制得脱氧胆酸,NaOH碱化制得...
Comparison of the bioavailability of lysine in blood meals of various origins to that of l-lysine HCL for Rainbow trout (Oncorhynchus mykiss) Aquaculture, 262 (2007), pp. 402-409 Google Scholar Espe et al., 2006 M. Espe, A. Lemme, A. Petri, A. El-Mowafi Can Atlantic salmon grow on...
The SILOhealth 104 product was first emulsified in water (18.21 mg/mL) with the addition of NaOH (120 mM) to bring the pH to 8.5, then hydrolyzed with HCl/MeOH at 22°C for one hour. After total hydrolysis, one aliquot of the sample was analyzed directly via gas chromatography (GC)...