Thermodynamics Of Mixing Of Poly Essay

The purpose of Chapter 4: The Separation of Mixtures was to determine methods of separating mixtures of solids, liquids, and gases using their characteristic properties. Prior knowledge that help provide background for this chapter can be found in chapters 3 and 4, which both contain information about characteristic properties. Chapter 3 focused on density, boing point, and freezing point, and the importance of characteristic properties, and Chapter 4 concentrated on the characteristic property of solubility. The information about characteristic properties from both chapters were vital in understanding how to separate mixtures based on each substance’s different characteristic properties. Also, the information that solubility is effected by

A monomer is a compound that can react with at least two other monomers and form polymers (Monomer). Polymers are very large molecules that are made up of repeating monomers. Polymers can be formed into linear and nonlinear structures. Most polymers consist of two or more different types of monomers (Polymer).

The objective of this lab in its entirety was to understand different methods that are used when dealing with the separation of mixtures. There are different techniques such as decantation, sublimation, evaporation, and filtration. Mixtures are a part of everyday life and it is important to know whether or not a mixture is heterogeneous or homogeneous. In this experiment, we were able to separate the mixture into sand and into salt through filtration and evaporation. The sand was separated from the mixture through filtration.

Hypothesis: If we use these materials and use magnets, water, burners, and filters on the mixtures and elements given we should determine what kind of effect these materials given will have on these mixtures and elements, physical or chemical.

Substance A and B were weighed; Substance A weighed 0.502 g and substance B weighed 0.503 g. Both substances were put into two different test tube with approximately 8 ml of DI water into the test tub. Substance A and B were stirred and B dissolved while A did not. This shows that B is soluble in water compared to A. Thus, shows that B is soluble in water than A. The reason why B is soluble in water is because it has a higher dipole moment than A. With a higher dipole moment, it shows that it is soluble in water since it is polar and the bonds were easily broken.

10. I then repeated steps 1-9 using alcohol as my solvent, instead of the 1% salt solution.

Sand – it did not dissolve into the water, and was heavy enough to stay at the bottom while the benzoic acid floated to the top during the heating process. It was composed of many different colors and sized rocks, each one unique. But when you looked at them all together, they blended into a beige mound.

The results of each mixture were averaged out and the heat given out and the heat given off in KJ/g was measured by the heat formula Q = mc ΔT. The theoretical values were calculated using a mass fraction. The heat given off was measured using a calorimeter of water and how much heat it absorbed. The theoretical values were calculated by using a mass fraction. The prediction of this experiment was that the alkanes that had longer carbon chains would increase the amount of heat given off.

The experiment at hand involved a lot of different steps and goals, yet the entirety of the experiment was aimed at determining the concentration of Ni2+ and Co2+ ions in an unknown solution. Such an experiment is greatly important and has several benefits. First of all, the experiment teaches and reinforces multiple different skills that every scientist should be familiar with, such as using a spectrophotometer, diluting solutions, and creating calibration curves. On a much broader scale, however, the experiment provides a simple and relatively quick way to determine the concentration of an unknown solution. Such a tool is very useful and important in modern society, for a wide variety of reasons; yet determining the toxicity or potential danger of a solution is probably one of the most important uses, whether it be in the lab, medicine, nutrition, or some other field of study.

Both natural and synthetic polymers are a vital part of our daily lives. Natural polymers are found in rubber, skin, hair etc. Synthetic polymers are found in nylon, polyester, plastic, chewing gum etc. This lab is demonstrating the properties of the common synthetic polymer polyvinyl alcohol (PVA). It is often used as a thickener or stabilizer cosmetics but also in paper cloths, films and cements.

Depending on whether a mixture is homogeneous or heterogeneous, there are many forms of separation. Separating a mixture means to divide the substances into one or more distinct parts. There are multiple ways to separate a mixture. Filtration, simple distillation, liquid chromatography, and centrifugation are four ways that liquids or gases can be divided into different parts.

In the demo hexane, dichloromethane and water where poured into a graduated cylinder causing them to be in layers with dichloromethane on bottom, water on top and hexane in bottom. I believe this was caused by the density of the substances.

A liquid-liquid extraction is used when separating two different liquids that are immiscible. Often the two different liquids will be soluble in water and a solution that is organic. These two types of liquids will create two distinct layers of isolated solution. This is caused because one of the liquids will dissolve into the water and the other liquid will dissolve into the organic solution and since water is a polar molecule and the organic solution is a non-polar molecule the two layers will not mix at all. Therefore, creating two distinct layers that can then successfully be separated. In this experiment, the top layer of solution in the separatory funnel consists of the ether solution layer containing the unknown neutral compound and

A few sorts of hardware have been created with the end goal of pumping the best possible extents of epoxy resin sap and solidifying operator to a blending spout or blending head at or close to the infusion port. This hardware is all restrictive in nature and along these lines it is impractical to give any insights concerning its cosmetics.

Overall, the experiment succeeded that the metals show the theoretical properties. Differences existed in the mathematical calculation of the actual length. These differences, however, it can be accounted for by experimental error; more over there are uncertainty on purity of the