Chemistry Essays

Abstract Sodium carbonate (Na2CO3), commonly known by trade name soda ash, is a white, anhydrous, powdered or granular material that is an essential raw material used in the manufacturing of glass, detergents, chemicals, and other industrial products. In this experiment, the percent alkalinity of the unknown soda ash sample was …

-A subclass of pheromones is necromones, which contain oleic acid as a primary component. -Some pheromones trigger aggregation between organisms, others can trigger separation. -Necromones trigger necrophoric (organisms remove their dead) or necrophobic (organisms avoid their dead) behavior. -Arthropods use pheromones, this includes sowbugs and cockroaches. Chemical signals are picked …

Abstract The purpose of this analytical laboratory experiment is to determine the unknown concentration of potassium permanganate (KMnO4) solution by finding its absorbance through the use of spectrophotometer. The preparation of four known concentration of KMnO4 was done namely, 2.00×10-4M, 1.50×10-4M, 1.00×10-4M, 5.00×10-5M, respectively and is to be place on …

Objectives 1. Preparation and standardization of a 0.1M NaOH solution 2. To learn the technique of titration 3. Determination of the concentration of an unknown diprotic acid. Introduction Titration can be traced to the origins of volumetric analysis, which began in the late eighteenth century. Study of analytical chemistry began …

Your task is to create a dichotomous key to help students WRITE FORMULAE for all the different types of compounds that we have learnt this unit. Your audience will be students beginning their grade ten who have minimal knowledge on writing chemical formulas. They are able to: • Read the …

This experiment was performed to learn the technique of acid-base titration and to compare the efficiency of commercially available antacids by looking at their weight of HCl and weight of antacid values. The analysis of antacid tablets was highlighted in this experiment. The efficiency of antacid tablets was determined and …

This study determined the physico-chemical properties of developed squash-flavored mayonnaise in terms of titrable acidity, pH, viscosity and proximate analysis such as crude protein, crude fat, ash content and moisture content. The acceptability level of the developed product was also determined through evaluating their sensory qualities such as color, taste, …

Various types of reactions were completed to first create and then use Jacobsen’s catalyst in the asymmetric epoxidation of an unknown alkene with bleach in the laboratory. The chiral epoxide synthesized was then characterized with GC/MS and NMR. With this information the unknown alkene was able to be identified as …

Purpose: Demonstrate proficiency in using the balance and Bunsen burner. Determine that all the water has been driven from a hydrate by heating your sample to a constant mass. Relate results to the law of conservation of mass and the law of multiple proportions. Perform calculations by using the molar …

Polyethyene is a type of polymer that is used in our daily life. Polyethylene(abbreviated PE) is a thermoplastic polymer, meaning that is can be melted to a liquid state and remolded as it returns to a solid state. PE is chemically synthesized from ethylene, a compound that is usually made …