The value is inversely related to the concentration of hydrogen ion concentration. Answer and Explanation: The pH change shows whether a substance is acidic or basic. The pH of acids is less than seven, and bases have a pH value above seven. In between, a...Become a member...
What is the endpoint volume (Ve) of the titration of 50.00 mL of 0.025 00 M MES with 0.100 0 M NaOH, where MES is a weak acid with pKa = 6.27? Additionally, describe the behavior at each of the four stages of the titration: Va = 0, 2, 5, 10, 10.1, 11, 12, ...
Tris is also called tris base. As a weakly alkaline solution, it has a pKa of 8.1 at 25 °C. Its effective buffer pH range is between 7.0-9.2, and the pH of the prepared aqueous solution is around 10, and its pH is often adjusted by adding hydrochloric acid. During experiments, it...
试题分析: 句意：你怎么把英语学的那么好？我通过用英语学习英语。What什么，by通过； Where在哪儿， at在；Why为什么, in用；How怎样，by通过。根据语境可知选D
Chemistry is the branch which deals with the detailed study of matter, its properties, how and why atoms/substanced combine or separate to form other substances. Understand all the basic concepts of Organic, Inorganic, and Physical Chemistry with detaile
29 岁孕妇，妊娠32 周。3 周内阴道少量流血2 次，今晨突然阴道流血多于月经量，无腹痛。血压13.3/10.7kpa，脉率96 次/分，宫高30cm，腹围85cm，臀显露，未入盆，胎心清楚，144 次/分。以下辅助检查中应先选哪一项对诊断意义最大标准答案：
b) 100 ml of 0.100 M NaHCO3 and 200 ml 0.100 M H2CO3? (Ka for H2CO3 is 4.4 x 10^-7) What is the pH value of a buffer made up of 10 ml of 0.1 M NaHCO_3 and 5 ml of 0.14 M H_2CO_3? The pKa for bicarbonate is 6.1. What i...
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指纹考勤机的工作原理是通过提取指纹图像的特征进行身份识别，其工作流程可以分为下列几个步骤，正确的顺序是( )①指纹图像采集 ②匹配成功之后，自动进行签到记录并发出“已签到”的提示声音 ③指纹图像特征值的匹配 ④指纹图像特征提取
Titration is described as a technique that helps to analyze the sample's concentration and volume of reagent required. The titrant, which is the solution that has known strength is placed in the burette, and the analyte that has unknown strength is not known is placed in the flask ...