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Chemistry Essays

Chemistry essays are different from those who are more related to creative writing. They should be based on critical thinking, logic, and proper evaluation. Sometimes these essays are built on solving chemical equations and other problems. You need to have the solid theoretical background to prepare homework which deserves the highest grade. When students cannot cope with the tasks alone, they seek help at writing service. Our company is one of the best in this specialization. We do not only offer free samples on any topic but help with preparing the entire work within the quickest time.

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Primary and Secondary Standard solutions in Chemistry

Primary standards, such as potassium hydrogen phthalate (KHP) (C8H5KO4), display unique characteristics such as high purity, maintain stability during storage within a long period of time whether in solid or liquid form, large molar mass as calculated to be 204 (RMM), low reactivity with the surrounding air, high stoichiometry and …

Determination of the Amounts of Sodium Hydroxide Solution

Introduction Sodium carbonate and sodium hydroxide are both alkaline in nature. When hydrochloric acid is added to the mixture, sodium hydroxide reacts like this: NaOH + HCl —–> NaCl + H2O ………………….. (1) Sodium carbonate reacts with hydrochloric acid in a similar way but the reaction comes in 2 steps: …

Communicating Laboratory Procedures

Laboratory procedures and practices must be communicated in a laboratory, because to keep the risk as minimum as possible by storing the chemical products in an appropriate and safe manner. A staff member shall be responsible for all stored chemicals and their use. All products must be labelled so that …

Analysis of Sulphur Dioxide Content in Wine

To determine the amount of sulphur dioxide, an antioxidant, present in wine by using volumetric analysis. Principle All free SO2 molecules is first convert into SO32- by NaOH solution: SO2 + 2OH- � SO32- + H2O Acidification of the solution liberates all SO2: 2SO32- + 2H+ � 2SO2 + 4H2O …

Comparing The Enthalpy Change Of Combustion Of Different Fuels

The aim of my experiment will be to find out which alcohols have a higher enthalpy change of combustion. The comparison of the enthalpy changes of these fuels will then determine the alcohol efficiency and effectiveness. I will experiment on the first 5 consecutive primary alcohols. These are; methanol, ethanol, …

Comprehensive and Detailed Chemistry Notes

1. MUCH OF THE WORK OF CHEMISTS INVOLVES MONITORING THE REACTANTS AND PRODUCTS OF REACTIONS AND MANAGING REACTION CONDITIONS * outline the role of a chemist employed in a named industry or enterprise, identifying the branch of chemistry undertaken by the chemist and explaining a chemical principle that the chemist …

Determination of the formula of Hydrated Iron (II) Sulphate Crystals

Analysis Method one. In order to find out the ratio of H2O to FeSO4, the mass of water needs to be calculated, which is done by weighing the iron sulphate before and after the heating. This will tell us the weight that was lost and thus the weight of the …

Determination of the Purity of Sodium Carbonate

Aim: To determine the percentage purity of a sample of sodium carbonate. Equation: Na2CO3 + 2HCl –> 2NaCl + H20 + CO2 Sodium Hydrochloric Sodium Water Carbon Carbonate Acid Chloride Dioxide Chemicals: * 4.00 g dm-3 of impure Sodium Carbonate in solution * 1.00 mol dm-3 Hydrochloric acid Apparatus: * …

Determining Bond Type of Unknown Substances

Purpose: The purpose of this lab was to determine the type of bonding in some unknown substances based on their physical properties. Table of Properties: Properties Ionic Molecular Electrical Conductivity of the compound in aqueous solution Conduct Don’t Conduct Melting and Boiling points High Low Electrical Conductivity of the compound …

Hydrolysis of Halogenalkanes

Planning Aim and background reading The aim of this experiment is to show how the rate of reaction of the halogenoalkanes changes in respect to the C-X bond, where the C is the carbon and the X is the halogen. This will occur through a nucleophilic attack. The halogenoalkanes undergo …

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