The relation of titration percentage with hydrogen ion concentration is described in the all kinds of acid-base titrations. The expression of the calcuating PH valus is derived and it has applied example to calcuate PH value of the titration process. 本文阐述了各种类型酸碱滴走过程中,滴定百分数与氢离子浓度之间的关系式,导出了滴定过程中计算PH值的数学表达式,并应用于实例计算滴定突跃PH值。
There is the optimal inter-spacing which can make the highest volume percentage of hydrogen adsorption storage under the different operation situations. 在管间距较大的情况下,吸附储氢的体积百分比却随管径的增大而减小。在不同的操作工况下,存在一个最优的管间距,能使吸附储氢的体积百分比达到最大值。
The rate of hydrogen production reached a maximum of 16.8 mL / h and the percentage of hydrogen gas in the headspace of serum bottle was up to 41 %. 从对数期开始迅速产氢,并且一直持续到稳定前期,产氢速率达到16.8mL/h,生物气中最大氢含量为41%。
Variation relationship between percentage concentration and properties of refined pinane hydrogen peroxide ( PHP ), such as refractive index, density and viscosity were studied. Effect of temperature on variation of PHP properties was studied as well. 用精制提纯的蒎烷过氧化氢(PHP)为原料,研究了PHP主要物理性质如密度、折光率及粘度与含量之间的相互关系,同时还研究了温度对PHP物性变化的影响。