KWAME NKRUMAH UNIVERSITY OF SCIENCE AND TECHNOLOGY COLLEGE OF TITLE: REMOVAL OF HARDNESS OF WATER USING PRECIPITATION AND COMPLEXATION METHODS. NAME: KWARTENG YAW PRINCE COURSE: BSC. ENVIRONMENTAL SCIENCE YEAR: FIRST YEAR EXPERIMENT NO. : A.1.1.3. T.A.: BRIGHT KOFI LEONARD DATE: 7TH NOVEMBER‚ 2007. Aims and Objectives: 1. To describe water hardness.
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Extraction of Caffeine from Tealeaves Perez‚ Albert Solomon K.*; Quiambao‚ Marie Angela C;.Pascua‚ Hanna Harriette R.; Patricio‚ Maria Roxanne DC.; 2-Chemistry‚ Department of Chemistry‚ College of Science University of Santo Tomas España St.‚ 1015‚ Manila Abstract Caffeine is soluble in both water and organic solvents‚ solid-liquid extraction and liquid-liquid extraction were used in the experimentation process. Caffeine was extracted using hot water‚ however‚ due to its
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sulfate in coal‚ which is the basis for this experiment. In any precipitation gravimetric analysis‚ the species to be determined is reacted with a reagent to yield a product that is: a) of known composition‚ b) is relatively pure‚ and c) of low solubility. Knowing the mass of the dried product and the mass of the original sample and their formula weights (to create a gravimetric factor)‚ the percent of the species to be determined can be calculated. In the analysis for sulfate‚ the sample to
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Biochemistry Exam I Terminology Boiling point is the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid. At this temperature the liquid phase changes into the gaseous phase (also a colligative property) Melting point is the temperature at which the solid and liquid phases are in equilibrium. At this temperature the solid state changes into a liquid phase (also a colligative property) Specific heat is the amount of energy (in joules or calories) needed
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Date of experiment: September 3rd‚ 2013 Organic Chemistry II – CHLB330 Name: Symone MoxeyLab Partner: Lynden Cooper Isolation of caffeine from tea leave Abstract:- Introduction:- Caffeine is probably the most commonly used addictive drug. This drug is found in a number of things ingested by people. It belongs to a group of nitrogen bases called purines. Because caffeine possesses these base-like properties‚ it is described as an alkaloid. They usually taste bitter and often are physiologically
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Name: Carson Doorley Partner: Adam Lindeman Purpose: The purpose of this lab is to 1. Test your lab skills for accuracy.2. Also to know what the safety rules of lab are.3. Lastly to be able to name and identify la eiment Procedure: See lab skills lab pp23-28. Questions:1. The hottest part of the flame is the tip of the inner blue cone of the flame 2. if your flame is to yellow orange or sooty black you have to adjust the air vent of the Bunsen burner. 3.Zero the triple beam balance
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another solvent. Acid-alkaline extraction is a commonly used method to recover a compound from solid or liquid and also a form of solvent-solvent extraction. Acid-alkaline extraction is a method to separate compounds according to their relative solubility in two different immiscible solutions. Usually‚ acid-alkaline extraction is being used to recover a compound from solid or liquid. The two solvents used to conduct acid-alkaline extraction must be insoluble to one another. Therefore‚ the mixture
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Abstract: When ionic compounds are dissolved in water‚ they break apart into ions. In this lab the opportunity to mix two ionic solutions and observe the results was given. Some ions will remain dissolved and uncombined in the solution even when they are mixed with other ions. When other ions are mixed‚ they form compounds that appear as cloudy or grainy precipitates. The objective of this lab was to observe the formation of compounds and to write the names and formulas of ionic compounds. It is
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Kate Kirby June 6‚ 2013 Title: Extraction of an Unknown Compound Purpose: The purpose of this experiment was to separate a mixture of two or more unknown compounds and identify them based on their melting point and reactivity with an acid or a base. Compound studied/Reactions: The organic solvent used in this experiment was methyl t-butyl ether (MTBE‚ 2-methoxy-2-methylpropane). The unknown that dissolved in the MTBE‚ but was insoluble in water. MBTE is very volatile and flammable. It was
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interaction‚ in which the non-electrolyte could be less soluble at high salt concentrations. It is used as method of separating proteins. This experiment uses ammonium sulphate to force the precipitation of α-amylase using the salting out process. The solubility of a protein is dependent on the salt concentration in the solution. Ideally “the greater protein concentration‚ the better recovery you will have”‚ (Anfinsen‚ 1968). Tube no. 4 showed the greatest recovery however this tube contained the second
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