UC知道跪求化学题目的翻译
来源：百度知道 编辑：UC知道 时间：2024/05/28 18:36:47
Point C in figure 12-4 shows where the intermediate from of a diprotic acid lies on a titration curve .this is the least-buffeted point on the whole curve ,because the PH changes most rapidly if small amounts of acid or base are added .there is misconception that the intermediate form of a diprotic acid behaves as a buffer when ,in fact ,it is the worst choice for a buffer .
Point D at any point between C and E，there is a buffer containning BH+(the base )and BH2+2(the acid )when Va=15.0ml
Point E is the second equivalence point,at which the solution is formally the same as one prepared by dissolving Bh2cl2 in water.the formal concentration of BH22+ is
The PH is determined by the acid dissociation reaction of BH22+
Beyond the second equivalence point (Va >20.0ML ,the PH of the solution can be calculated from the volume of strong acid added to the solution .for example at Va=25.00ml there is an excess of 5.00ml of 0.100M HCL in a total volume of
Point D at any point between C and E，there is a buffer containning BH+(the base )and BH2+2(the acid )when Va=15.0ml
Point E is the second equivalence point,at which the solution is formally the same as one prepared by dissolving Bh2cl2 in water.the formal concentration of BH22+ is
The PH is determined by the acid dissociation reaction of BH22+
Beyond the second equivalence point (Va >20.0ML ,the PH of the solution can be calculated from the volume of strong acid added to the solution .for example at Va=25.00ml there is an excess of 5.00ml of 0.100M HCL in a total volume of
点在图C 12-4可显示从一个diprotic酸中间是一个滴定曲线。这是最少的冲击，对整个曲线上的点，因为PH值的变化最迅速，如果酸或碱少量添加。有错觉，以为一diprotic酸中间形成了缓冲的行为，而事实上，它是一个缓冲最坏的选择。
D点之间的任何C和E点，有一个缓冲区，含波黑+（基地）和BH2二（酸）当VA =十五点零毫升
E点是第二等价点，在该解决方案是相同的正式解散在water.the的BH22正式浓度Bh2cl2准备1 +是
的PH值是取决于BH22酸解离反应+
除了第二等价点（佤族“20.0ML，溶液的PH值，可从强酸量计算添加到解决方案。在佤族=二十五点〇〇毫升有一个对0.100M在盐酸五点○○毫升例如过剩对10.00 25.00 = 35.00ML总量的PH值是通过写作找到
模糊终点
许多diprotic酸或basea滴定表明，在图12 2月底，在明确的曲线分，4.some滴定不同时显示终端，如曲线b，这是对的0.100M 10.0ML滴定计算说明尼古丁（Pkb1 = 6.15，Pkb2 = 10.85）与0.100M盐酸。这两个反应
没有在第二等价点（日）明显突破，因为BH22 +操作系统过于强烈的酸（或等价的，波黑+太弱基地）。由于滴定方法，低pH值（“3），盐酸反应近似完全符合波黑+给BH2 2分解。为计算点之间的PH值I和J需要平衡系统的治疗，在本章的后面。，我们descirbe如何用电子表格计算整个曲线。
在核糖核酸酶在本章开始滴定法，但在PH值的不断变化，没有明确的突破。原因是，29组在结果滴定。曲线分析，可以发现许多pKa值，但分析需要一台电脑，而即使是这样，个人pKa值不会非常精确地确定。