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Iii. How It Works:A. the making of sol disperse waySol sulfur in the water:1. Mix one measure of sugar and one measure of sulfur in the mortar. Erode the mixture until smooth. 2. Take one measure the mixture and mixing again with one measure of sugar, then erode again until smooth.3. Continue the work until 4 times, then fill it with 50 ml of water. Stir the mixture and pay attention to the case.Sol so – so in water:1. Take a spatula so that – in order and dissolve in water as much as a third of the test tubes. 2. then, to facilitate the dissolving, then the mixture is heated. Then observe happening.B. manufacture of soles by means of condensationSol Fe (OH) 3:1. Heat up the 50 ml of water in a 100 ml beaker to boiling.2. Add 25 drops of FeCl3 solution saturated, and continuing until warming stirred solution of brown red. Then observe happening.C. Manufacture Of Emulsion1. Enter cooking oil 1 ml and 5 ml of water into the test tubes. Shake the test tubes. Put it in the tube rack test tubes and pay attention to the case.2. Add 25 drops of a solution of SOAP. Shake the test tubes. Then put it in a tube rack and pay attention to the case. Then, the result of a mixing are colloidal emulsionVi. Observations:No Experimental Observations1. The manufacture of sulfur sol in waterForm the mixture white turbid and after a while there is a sludge is left at the bottom of the mixture2. The making of sol gelatin in waterAfter cooled or left for a moment, into a solid gel like and the colour is green3. The making of sol Fe (OH) 3 in waterMix boiling water with FeCl3 into greater thick and Fe (OH) 3 the colour is reddish brown4. Mixing of water and cooking oilWater and cooking oil are not mixed. The position of cooking oil on the surface of the water.5. Mixing of water, cooking oil, SOAP and waterCooking oil can be well mixed in water. Vii. Data Analysis:The manufacture of sulfur sol use the dispersion (mechanical) with sulfur powder and erode added inert substances namely gerusan granulated sugar so that the sulfur can be immersed in water. Sulfur that has been mashed together to form sugar granules whose size resembling a colloid. Then the mixture is dissolved in water to produce the kind of colloidal sol.For the manufacture of gelatin used peptisasi way. How to peptiasi use pemeptiasi substances (solvers) that is heated with water to break up the large molecules in this case so that the gelatin powder into molecules small colloidal size. After the water and gelatin are already fused completely and then cooled down for a moment. Then be dense namely gelatin.The making of sol Fe (OH) 3 in a way that is done through the condensation reaction of hydrolysis. Hydrolysis reaction is a reaction of the salt with water. The way the condensation itself works by combining ions from aqueous solutions of true forming larger particles such as colloidal particle size (1-100 nm). The reaction is already underway when this has happened the changing colours of the original red brick mixture becomes reddish brown.Oil and water emulsion is (liquid liquid met yet are antagonists/reject – refuse) so can not dissolve in water. The position of the oil is on the surface of the water, this is caused by the mass of the type of oil that is smaller than the density of water. In order for water soluble oils then added emulgator i.e. a solution of SOAP. Then the water and oil mixed. Emulgator is referred to as SOAP because it can combine the two pieces of the fese don't mix.VIII. Questions and answers:a. questions:1. what differences manufacture sol way dispersion by means of condensation?2. How does the influence of aqueous SOAP against the mixture of water with cooking oil?3. give each two examples include colloidal liofil and liofob!4. on the colloidal hidrofil needs to be added protective colloid. What are the benefits of adding colloidal it?5. From sharing manufacturing colloidal way with dispersion and condensation, the way – how to break down into a group that includes physical processes and chemical process!6. describe the making of Colloids by means of peptisasi!7. Please indicate how the manufacture of sulfur sol including how condensation and how dispersion!
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