Solid

VII. Discussion 1. Why was the solution heated and then cooled during the recrystallization of the crude acetaminophen? Recrystallization is a very important method of purification for organic solids. This process is carried out by the separation of compounds based on the difference in solubility. The steps to recrystallization can be described by the following • Choose an appropriate solvent based on the compound’s characteristics • Dissolve the compound in the minimum amount of solvent •…

Experimental: Materials – double salt (self-made & EIU Chemistry Stockroom), 6 M HCl (EIU Chemistry Stockroom), 10% BaCl2, 6 M HNO3 (EIU Chemistry Stockroom) Equipment – Ocean Optics Spectrometer USB4000, Logger Pro Procedure – In order to find the mass percent of the sulfate, the sulfate needed to separate itself from the rest of the double salt. To do this, experimenters began by weighing out 0.998 g of the double salt into a 250-mL beaker. They then used the graduated cylinder to add about…

bath to melt them. This separated out the components within them- making it easy to measure their percentage value. I found the regular margarine to be made up of 14.5% solids, 64.2% oils, and 21.3% water. Next, I used the same method as before, and found the percentage of each component of the light margarine to consist of .8% solids, 42.9% oils, and 56.3% water. After that, I found the percent error of my calculated amount of each part of both margarine types. I determined my percent deviation…

A filter is something that removes impurities or solid particles from a liquid or gas that passes through it. There has been a total of 76% of deaths due to infections from dirty liquids and poisonous gases. Not many filters do the same job you would like it to do, but with this particular filter it is made to filter out gases, liquids, and solids from a variety of different elements and objects as well as cleaning any object you toss into it. The item's frame is powerful enough to do these…

1) Important solubility characteristics for a solvent to be used in the crystallization of an organic solid that’s contaminated with impurities is that the organic solid should have low solubility at low temperatures in the solvent, but highly soluble at high temperatures. Also, the solvent should allow the impurities to be either completely soluble or completely insoluble at all temperatures. 2) One way to improve our percent recovery is by making a second crop of crystals by removing the…

two different compounds switch places” (Lew 40). This means that one of the reactant’s molecule “trades” places with another from another compound to form products, like a precipitate, hence the term double-replacement. A precipitate is usually a solid insoluble product of a reaction, compared to the other soluble aqueous molecules in the formula. Its creation is what characterizes precipitation reactions since it is what the reaction is named after. The precipitates can look like a powdery or…

During the experiment, observations were made about their physical appearance. In part I, reaction one produced a blinding, bright white light when the metal burned and the metal turned into a white powdery substance. For reaction two, there was no reaction at first and it took a long time for it to react, but then bubbles started to form around the magnesium ribbon and the substance turned into a pink-yellowish color around the magnesium strip when it was placed in the 150 milliliters beaker.…

The main purpose of this experiment is to purify an impure solid by the technique of recrystallization. This technique involves several steps, selecting an ideal solvent, dissolving the compound in a minimum amount of boiling hot solvent, filtering insoluble impurities while the solution is hot; crystallizing the purified compound, and isolate the pure compound by vacuum filtration . The unknown used in the experiment was #4, which were white crystals. In order to determine the ideal solvent…

Paragraph 1 The research done by Haines on how the atomic structure of FePO4 varies when temperature increases from 294K to 1073 shows few crystal chemical relationships between SiO2 and FePO4. There is a first order variation of cell parameters and atomic orientations with temperatures lower than 980K and α-phase plays a dominant role over β-phase at high temperature. For the α-phase FePO4, the cell parameters increase with a non-linear trend when temperature increases linearly. The volume…

The Babyliss Pro Nano Titanium Rotating Hot Air Brush is a professional grade styling tool that uses ion technology to give you smooth hair that is shiny and free of frizz. It has various settings that allow you to control the type of dry and style that you want from your products. The Babyliss Pro is made with superior materials like its titanium barrel, which holds heat, and its bristles, which provide a better grip on the hair. For those who want a professional blow out look without the…