pH=10, 0.25M Na2CO3/NaHCO3 buffer 答案 碳酸氢根的pK=10.25由缓冲溶液公式pH=pK-lg[c(酸)/c(盐)]9.6=10.25-lg[c(HCO3-)/c(CO32-)]c(HCO3-)/c(CO32-)=4.47/1如果配制溶液一升,那么需要碳酸氢钠的质量是84×0.05×4.47/5.47=3.43克碳酸钠的质量是106×0.05×1/5.47=1克即称取3.34克无水碳酸...
pH=10, 0.25M Na2CO3/NaHCO3 buffer 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 碳酸氢根的pK=10.25由缓冲溶液公式pH=pK-lg[c(酸)/c(盐)]9.6=10.25-lg[c(HCO3-)/c(CO32-)]c(HCO3-)/c(CO32-)=4.47/1如果配制溶液一升,那么需要碳酸氢钠的质量是84×0.05×4.47/5.47=...
A NaHCO3-Na2CO3 B NaCL-NaOH C NH3-NH4CL D HAc-NaAc 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 B缓冲溶液(英文:buffer solution)是一种能在加入少量酸或碱和水时大大减低pH变动的溶液.常用作缓冲溶液的酸类由弱酸及其共轭酸盐组合成的溶液具有缓冲作用 解析看不懂?免费查看同类...
Ehrlich试剂;Elutioin buffer;EM Buffer 48小时发货支付宝 ¥414.0 上海尚宝生物科技有限公司1年 近3个月价格 带耳 带盖镍坩埚 适用于NaOH、Na2O2、Na2CO3、NaHCO3碱性溶剂熔 一件代发支付宝 ¥105.0 陕西优创金属有限公司8年 近3个月价格 同款
Na2co3/Sodium Carbonate Light Industrial Grade for Textile Industry US$190.00-195.00 / Ton 99.2% Min Industry Grade Powder Sodium Carbonate for Detergent US$192.00-196.00 / Ton 99.2% Min Light Sodium Carbonate for Industrial Use CAS 497-19-8 US$192....
is still lack. To compare with our previous results in leaves, in this study, we investigated the physiological and proteomic characteristics of alkaligrass leaves in response to NaHCO3treatment, which represents saline-alkali stress and is different from the independent NaCl and Na2CO3treatments used...
It is found that the Na2CO3/NaHCO3 buffer reagents effectively inhibit the corrosion of C110 steel, and the inhibition efficiency can reach 96.1%. The higher pH leads to the better inhibition performance, and, particularly, the buffer system is more effective in the corrosion environment of ...
A solution of Na2CO3 contains 53g of solute in 200ml of solution. What is the molarity of this solution? How many grams of glucose are needed to prepare 500 mL of a 1.5 M glucose solution? What is the purpose of determining the pH o...
buffer solutionSeveral fining agents (activated charcoal, PVPP and zeolite for red wine; activated charcoal, bentonite and yeast walls for white wine) were evaluated for their efficacy in decreasing the amount of 4-ethylphenol and 4-ethylguaiacol. Their effect on several volatile compounds, colour ...
带耳 带盖镍坩埚 适用于NaOH、Na2O2、Na2CO3、NaHCO3碱性溶剂熔 陕西优创金属有限公司7年 月均发货速度:暂无记录 陕西 宝鸡市渭滨区 ¥1790.00成交1吨 供应食用小苏打 型号NaHCO3 天津瑞泽顺畅化工科技有限公司10年 月均发货速度:暂无记录 天津市滨海新区 ...