●●● ●●●● ●●●●● 5.Experimental results processing :008 ●●●● .(1)Isolate the surface tension of distilled water at experimental temperature from the appendix .(2)Calculate the surface tension of solution with different concentration of normal butyl alcohol by o, -AP2.o .(uSing surface tension as vertical ordinate, concentration as horizontal scale, draw the o-c figure of nomal buty alcohol solution on the coordinate paper .(4 Select some points from theo-c figure and draw the tangents of different concentration curve Then calculate the surface adsorptive capacity according to the gibbs equation : and draw the isothermal adsorption curve of nomal butyl alcohol solution
⚫ (1)Isolate the surface tension of distilled water at experimental temperature from the appendix. ⚫ (2)Calculate the surface tension of solution with different concentration of normal butyl alcohol by ⚫ (3)Using surface tension as vertical ordinate,concentration as horizontal scale,draw the б-c figure of nomal butyl alcohol solution on the coordinate paper. ⚫ (4)Select some points from theб-c figure and draw the tangents of different concentration curve .Then calculate the surface adsorptive capacity according to the Gibbs equation ;and draw the isothermal adsorption curve of nomal butyl alcohol solution 5.Experimental results processing 2 1 2 2 = p p
●●● ●●●● 6.Questions ●●●●● ●●●● ●●●●● ●●●● (lUring experiment, if the capillary insert the liquid surface by lmm, how much error will bring about (2)During experiment, why do we slow the barbotage (3)During experiment, why do we measure the surface tension of different concentration solution from from low 0 hig
6.Questions ⚫ (1)During experiment ,if the capillary insert the liquid surface by 1mm ,how much error will bring about? ⚫ (2)During experiment ,why do we slow the barbotage ? ⚫ (3)During experiment,why do we measure the surface tension of different concentration solution from from low to high
EXPERIMENT 3 3)十周石油学 华东 Preparation and electrophoresis of colloids ●●●●● Wang Zeng bao 20114
Preparation and electrophoresis of colloids Wang Zengbao 2011.4 EXPERIMENT 3
●●● ●●●● ●●●●● 1. Experiment purposes ●●●● ●●●●● ●●●● .(1 Learn the basic principles of preparation of sol (colloid), and master the main methods of preparation sol; .(2) Mensurate the electrokinetic potential of Agl(silver iodide) sol by measuring the movement of interface
1. Experiment purposes ⚫（1）Learn the basic principles of preparation of sol (colloid), and master the main methods of preparation sol; ⚫（2）Mensurate the electrokinetic potential of AgI (silver iodide) sol by measuring the movement of interface
●●● ●●●● 2. Experiment principles ●●●●● ●●●● ●●●●● ●●●● Colloidal sol is a highly dispersed system with solid of very small solubility dispersing in liquid. Its diameter changes in the range of 10-to 10-meter. The formation of stable colloidal material involves two facets: the dimension of the dispersed phase within the colloidal range; the particles dispersed in liquid should not aggregate, so stabilizing agent usually added Basically, the preparations of colloidal systems involve either degradation of bulk matter or aggregation of small molecules, ions or particles
2. Experiment principles Colloidal sol is a highly dispersed system with solid of very small solubility dispersing in liquid. Its diameter changes in the range of 10-7 to 10-9 meter. The formation of stable colloidal material involves two facets: the dimension of the dispersed phase within the colloidal range; the particles dispersed in liquid should not aggregate, so stabilizing agent usually added. Basically, the preparations of colloidal systems involve either degradation of bulk matter or aggregation of small molecules, ions or particles