2.
In this experiment you will determine the rate equation for the reaction of potassium persulfate, K2S2O8, with potassium iodide. The reaction is: S2O82- + 2I1- ----> 2SO42- + I2 .
The rate equation for this reaction will be: rate=k*[S2O82-]p *[I1-]q.
3.
These three examples show that the rate of a reaction can depend on the concentration of one or more of the reactants. The rate of reaction for the Iodine Clock reaction is dependent upon the concentration of hydrogen peroxide, iodide ions, as well as sulfuric acid. The rate can be related mathematically to the concentrations of the reactants. Before we look at a reaction dependent upon multiple reactants, let us look at a simpler example. A good choice is the decomposition of the dye that we have already seen in Fig. 1 and Fig. 2 in the section on the rate of reaction. In this case it can be shown that the rate is directly proportional to the concentration of dye, ΔcD. That is,
Rate = k1cD (1)
The constant of proportionality k1 is called the rate constant. It is independent of the concentration of dye, but increases as temperature increases. This accounts for the greater rate of reaction at 80°C than at 50°C, as well as the greater rate of the iodine clock reaction at 20°C compared to 8°C.
程序
1使用表9.1在您的报告书，提供的解决方案中包含了正确的卷准备试管。
2将试管置于水浴尽快，并允许将设立至少10分钟的热平衡。测量并记录温度的水浴。
3启动秒表，小心倒入测试管B的内容到试管A.倒入到试管乙试管A背面的内容混合溶液，然后替换到水浴中的试管乙。
4停止秒表只要一个蓝色的颜色会出现在你的试管。记录（以秒计）为蓝色的颜色所需的时间，出现。
5记录最后的试管B.将溶液温度
In this experiment you will determine the rate equation for the reaction of potassium persulfate, K2S2O8, with potassium iodide. The reaction is: S2O82- + 2I1- ----> 2SO42- + I2 .
The rate equation for this reaction will be: rate=k*[S2O82-]p *[I1-]q.
3.
These three examples show that the rate of a reaction can depend on the concentration of one or more of the reactants. The rate of reaction for the Iodine Clock reaction is dependent upon the concentration of hydrogen peroxide, iodide ions, as well as sulfuric acid. The rate can be related mathematically to the concentrations of the reactants. Before we look at a reaction dependent upon multiple reactants, let us look at a simpler example. A good choice is the decomposition of the dye that we have already seen in Fig. 1 and Fig. 2 in the section on the rate of reaction. In this case it can be shown that the rate is directly proportional to the concentration of dye, ΔcD. That is,
Rate = k1cD (1)
The constant of proportionality k1 is called the rate constant. It is independent of the concentration of dye, but increases as temperature increases. This accounts for the greater rate of reaction at 80°C than at 50°C, as well as the greater rate of the iodine clock reaction at 20°C compared to 8°C.
程序
1使用表9.1在您的报告书，提供的解决方案中包含了正确的卷准备试管。
2将试管置于水浴尽快，并允许将设立至少10分钟的热平衡。测量并记录温度的水浴。
3启动秒表，小心倒入测试管B的内容到试管A.倒入到试管乙试管A背面的内容混合溶液，然后替换到水浴中的试管乙。
4停止秒表只要一个蓝色的颜色会出现在你的试管。记录（以秒计）为蓝色的颜色所需的时间，出现。
5记录最后的试管B.将溶液温度
