Chemistry Essay Examples Page 55

Hypothesis: The higher the concentration of hydrochloric acid, the faster the reaction will take place because there will be more hydrochloric acid particles to collide with the marble chip particles therefore resulting in a quicker reaction. The lower the concentration, the weaker the reaction will be as there will be fewer particles so less chance…

Testing for reducing sugars, non-reducing sugars, starch, lipids and proteins in unknown substances: Our aim: was to find out which substances from our five samples have reducing sugars present to determine what they may be for example; they could be monosacchrides or disaccharides. This was carried out by using Benedict’s test. To find out which…

After thinking about all the things I do purchase daily, I feel it is best to make better decisions on how we should spend our money which should help us with our finances. There can be times we spend our money without thinking it clearly through and already having the money for something you want…

Abstract The various methods available to synthesize aspirin lead to the need to examine and evaluate production efficiency and purity. The purpose of our experiment was to synthesize acetyl salicylic acid (aspirin) and then determine the relative purity of the synthesized sample by observing the melting point temperature range. The procedure performed in our experiment…

Introduction The report details the production of Aspirin in a small laboratory, highlighting the esterification reaction between salicylic acid and acetic anhydride. This reaction replaces salicylic acid’s alcohol group with acetic anhydride to form a new compound called acetylsalicylic acid or Aspirin. The report provides further details about the procedure and experimental technique employed in…

The Effect of Molecular Weight to the Diffusion Rate of Substances[ 1 ] The consequence of molecular weight to the rate of diffusion of substances had been obtained through agarose-water gel experiment. Drops of the undermentioned dye samples were used as controlled variables: K permanganate, K bichromate and methylene blue. Each dye has a molecular…

ABSTRACT The bilimbi, Averrhoa bilimbi, L., (Oxalidaceae), is closely related to the carambola but quite different in appearance, manner of fruiting, flavor and uses. The only strictly English names are “cucumber tree” and “tree sorrel”, bestowed by the British in colonial times. “Bilimbi” is the common name in India and has become widely used. In…

The aim of the experiment that was carried out was to see, at what temperature and in which standard solution, does the amount of dye left in the boiling tube had the highest percentage transmission. Beetroot was used for the experiment because it was easier to see the dye after the practical was completed. Putting…

Polymers a large molecules made up of a chain of smaller molecules, known as monomers. The monomers that a polymer is made up of decide its structure and therefore it’s function. These monomers are linked and coiled in a very specific manor giving the polymer a specific tertiary structure (an extensively coiled and linked polymer…

Paper chromatography is a technique that involves analyzing mixtures and identifying their separate constituents. This method includes dissolving ink dyes on porous paper with a solvent. As a result, the pigments travel through the paper at different speeds depending on their solubility. The speed at which pigments move through paper is determined by their solubility….