Separation Of Mixtures Lab Report

According to the qualitative data that was obtained, some of the solid, the salt, was soluble in the solvent, which in this case was water, while the rest of the substance, the sulfur, was not. When poured onto the filter paper, the yellow sulfur was collected on the filter paper, while the salt and the water went through to the bottom of the test tube and had a clear color. When the filtrate, or the liquid that was filtered through the paper, was put on the evaporating dish, the water evaporated and the solid that was left behind was the salt. This method, called filtration, used the different solubilities of the solids to separate the mixture of solids. A possible error groups may have encountered is that the groups had used tap water instead of distilled water, which may have offset the solubility and had filled some of the ‘holes’ so that the salt could not fit.

There are various techniques to separate a mixture of compounds from each other. One of the commonly used way to isolate compounds from a mixture of two compounds is called extraction. This method of extracting two compounds from each other relies on the different solubility of the compounds in two different solvents.

7.The air dried filter paper was then placed on the weighing scale and results were recorded

Because salt dissolves in water, we added water to the salt and sand mixture. Sand is insoluble in water making the sand not dissolve. The mixture containing of sand and salt water was then filtered with filter paper. The filter paper allowed the salt water to pass through because it is a liquid while not allowing sand to pass through because it is a solid. The salt water was then collected in a pre-weighed 250-mL (67.88 gram) beaker while the sand and filter paper was put in a pre-weighed (52.02 gram) 100-mL beaker. The water was then evaporated because we left both beakers to dry overnight.

Someone hands you a container of a mysterious white mixture, and they give you the task to figure out what it is. What would you do to solve the problem at hand? Many scientists might find physical and chemical properties to figure it out. The scientists might look for, odor change, temperature change, fizzing, and bubbling for chemical properties. They also inspect the mixtures for physical properties before a chemical reaction occurs, including shape, size, color, texture, and smell. The Eighth grade thinks that the mystery mixture is C6H8O7(Citric Acid) and NaHCO3(Baking Soda).

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

We mixed water into the mixture and the salt dissolved - that was our filtrate. Therefore, the filtrate contains both water and salt, A pure substance is not mixed, the entire sample is the same. Our filtrate was mixed. A homogenous mixture because there was no observable

The method that was used to separate from solids and liquids, was filtration. Filtration is the process in which the solution is passed through filter paper lining the sides of a funnel, the liquids is able to permeate through but the solids

The purpose of this experiment is to familiarize oneself with the general procedures determining a partition coefficient at the microscale level and learn in weighing milligram quantities of materials on an electronic balance, the use of automatic pipets, the use of transfer pipet, and the use of a vortex mixer. Also, to familiarize oneself with extraction

First we placed the evaporating dish on the wire to preheat for 3 mins. Next, we used tongs to transfer the evaporating dish and allowed 5 mins to cool and took the mass afterwards. After that, we added approximately 2g of MgSO4 crystals to the evaporating dish and found the mass. We then placed the dish on the burner for 10 mins, allowed it to cool found the mass. Next, we heated the dish again for 7 mins, allowed it to cool and found the mass. Lastly we burned until there was a constant

Distillation is a method of separating two volatile chemicals on the basis of their differing boiling points. During this lab, students were given 30 mL of an unknown solution containing two colorless chemicals. Because the chemicals may have had a relatively close boiling point, we had to employ a fractional distillation over a simple distillation. By adding a fractionating column between the boiling flask and the condenser, we were able to separate the liquids more efficiently due to the fact that more volatile liquids tend to push towards the top of the fractionating column, thereby leaving the liquid with the lower boiling point towards the bottom. After obtaining the distillates, we utilized a gas chromatograph in order to analyze the volatile substances in the gas phase and determine their composition percentage of the initial solution. Overall, through this lab we were able to enhance our knowledge on the practical utilization of chemical theories, and thus also demonstrated technical fluency involving the equipment.

The overall aim for conducting this lab experiment is to learn how to separate substances from each other using the methods of decantation, extraction, and sublimation. In this lab experiment we used the procedure of decantation after adding water to dissolve the salt so we can then separate the salt water from the sand. We also used the procedure extraction by heating the mixture of ammonium chloride (NH4Cl) and then extracting the sodium chloride (NaCl) with the water. The process of sublimation was used in this experiment by letting the mixture heat under the flume hood to observe the white fumes passes out of the mixture.

The purpose of this experiment was to separate a two component mixture using fractional distillation. Distillation is a process of vaporization than condensation of a substance, used primarily to separate substances from a mixture when there are different boiling points. Fractional distillation is when the mixture has multiple substances with similar boiling points, and a fractional column is used to create multiple vaporization/condensation cycles. Fractional distillation is important when two or more substances need to be separated, but they have similar boiling points.

We were able to meet the overall objectives of this lab. We were able to separate two liquids, four solids, and one substance. We are classifying this simply as substance #1 because while it was originally a liquid when we filtered it it got absorbed into the filter paper. What we do know is that it

In experiment 2, we used liquid-liquid extraction to separate a mixture using two immiscible solvents. We made use of extraction, back extraction, neutralization, and melting point technique to figure out the identity of the acid, base and neutral from the combined unknown mixture. There were a couple things that we had to pay close attention to. For example, identifying the organic and aqueous layer as liquid-liquid extraction is usually used to separate organic product from the mixing with the aqueous layer. Also, if precipitation did not form, we would need to add in MTBE solution and dry the solution with small amount of sodium sulfate.