Essays Tagged: "Sodium hydroxide"

Acid base Extraction

ansferAdd 10 ml of water Organic layer=mixtureaqueous layer=water(clear)Add 10 ml saturated aqueous Sodium bicarbonate NaHCO3 dissolves insolution sodium bicarbonate funnel and mix cautiously ... funnelDry combined dichloromethane The solvent layer issolutions and any emulsion yellow.layer with sodium sulfateWash the drying agent Residue of greenishwith further portions of white crystalline we ...

(5 pages) 85 0 4.5 Oct/1996

Subjects: Science Essays > Chemistry

Cocaine: Background and Effects (both physically and mentally)

e released from cocaine hydrochloride by further separation using simple chemicals such as ether or sodium hydroxide. This freebase cocaine is easily absorbed into the membranes of the relatively alka ...

(4 pages) 113 0 3.0 Feb/2004

Subjects: Social Science Essays > Controversial Issues > Drugs & Alchohol

Acid-Base Titration Chemistry Formal Lab Writeup by A.Mm

cid base indicators. We found that the equivalence point of the titration of hydrochloric acid with sodium hydroxide was not within the ph range of phenolphthalein's color range. The titration of acet ... e used the following reactions and equations in this lab:Reaction 1: The neutralization reaction of Sodium Hydroxide and Hydrochloric Acid:HCl (aq) + NaOH (aq) ? NaCl (aq) + H2O (l)Reaction 2: The com ...

(6 pages) 283 2 4.9 Apr/2004

Subjects: Science Essays > Chemistry

Investigation into temperature change during neutralisation.

e following is an experiment into temperature change in an exothermic reaction taking place between Sodium hydroxide (NaOH) and Hydrochloric acid (HCl) and also how the concentration of the acid will ... Neutralisation with hydrogen and a hydroxide, at the end, the product is water (also with left over sodium chloride). There is energy released in kilojoules when a reaction takes place.The main aim is ...

(3 pages) 18 1 3.0 Sep/2005

Subjects: Science Essays > Chemistry

Chlorine: Biography and the Dangers Related.

t dissolved in water, which an electric current is passed through the solution to produce chlorine, sodium hydroxide, and hydrogen. A Sir Davy demonstrated that the gas was an element and he suggested ...

(2 pages) 40 0 4.0 Dec/2005

Subjects: Science Essays > Chemistry

Titration Analysis of vinegar

nt amounts react. Vinegar is a solution of a weak acid in water. This acid will react with the base sodium hydroxide in a 1:1 molar ratio. If a solution of NaOH of known concentration will used titrat ...

(2 pages) 50 0 3.0 May/2006

Subjects: Science Essays > Chemistry

Experiment Prac Writeup. for reactions between metals and oxygen, water, dilute water and dilute alkali.

mol/L) hydrochloric acid (HCl)* 10ml conc (8 mol/L) hydrochloric acid (HCl)* 35ml dilute (1 mol/L) Sodium Hydroxide (NaOH)* 10 ml dilute (1 mol/L) sulfuric acid (H2SO4)* 14 test tubes* test tube rack ... ept calcium) using sandpaper2. Place each piece in a sperate test tube and add about 5mL of sodium hydroxide to each. Observe and record any change. Do not perform this test on calciumCaution: ...

(5 pages) 20 0 3.0 Aug/2006

Subjects: Science Essays > Chemistry

The aim of the experiment is to determine the percentage of aspirin in different commercial preparations (Aspirin & Magnyl) and to find out which is the best value for money.

est value for money.Hypothesis: Aspirin is a monoprotic (monobasic) acid and therefore, reacts with sodium hydroxide solution according to the equation:CH3-COO-C6H4-COOH + NaOH à CH3-COO-C6H4-C ... cm3 conical flask and dissolve it in 10cm3 of 95% ethanol.3)Titrate this solution with 0.1 mol dm-3 sodium hydroxide solution.4)Use two drops of phenolphthalein solution as indicator.5)Keep titrating ...

(5 pages) 30 0 5.0 Jan/2007

Subjects: Science Essays > Chemistry

Lab 12: Reduction of an Aldehyde to a Primary Alcohol by Use of NaBH4

nC8H8O3152.151.05680-81285isovanillinC8H8O3152.15-113-115179Vanillyl alcohol*C8H10O3154.17-113-115--Sodium hydroxide**NaOH39.992.13181390CorrosiveHydrochloric acidHCl36.461.18-26110CorrosiveSodium bor ...

(2 pages) 17 0 3.0 Apr/2007

Subjects: Science Essays > Chemistry


loride Potassium ferricyanide Test Tube stand Iron(ii) sulphateCopper(ii) Sulphate Tin(ii) chloride Sodium Hydroxide Ammonium Thiocyanate Tin(iv) chloride Hydrogen Peroxide Distilled Water Ammonium Th ... Ammonium Thiocyanate Ammonium Chloride Copper(ii) Thiocyanate Ammonium Sulphide Ammonium Hydroxide Sodium Sulphite Observations : Before After Tin (ii) Chloride small white crystals Produced a bad ro ...

(3 pages) 2609 0 0.0 May/2001

Subjects: Science Essays > Chemistry

Bubbles Research Paper

700s Nicholas Leblanc discovered that lye could be made from any ordinary table salt. Lye, which is sodium hydroxide, is one of the main ingredients in soap. This discovery made soap affordable for a ... lm oil, soybean oil, and corn oil are common fats used in soap making. Most common alkalis used are sodium hydroxide and potassium hydroxide. When you combine these fats with a water solution of an al ...

(5 pages) 21 0 4.6 Sep/2001

Subjects: Science Essays > Chemistry

Sodium Hydroxide - Production

Task: Research and describe the production of a named chemical including safety precautions.Sodium Hydroxide: Sodium Hydroxide, a white solid with a melting point of 318°C, is otherwise kn ... melting point of 318°C, is otherwise known as caustic soda or lye. The major industrial uses of sodium hydroxide are in the manufacture of chemicals, pulp and paper, aluminium, soaps and detergent ...

(2 pages) 19 0 5.0 Sep/2001

Subjects: Science Essays > Chemistry

Acid Rain

H Therefore a total of 2.83 x 1012 g of NaOH is needed to neutralize the lake water.iii) The use of sodium hydroxide versus limestone to neutralize the lake water: Sodium hydroxide: Sodium hydroxide p ... oxide produces water when reacting with an acid; it also dissolves in water very easily. When using sodium hydroxide to neutralize a lake, there may be several problems. One problem is that when sodiu ...

(4 pages) 1572 0 0.0 Feb/2002

Subjects: Science Essays > Chemistry

Is Biodiesel a Viable Alternative To Diesel From Fossil Fuels For Trucks And Buses?

ion of a vegetable oil with alcohol in the presence of the catalyst, such as potassium hydroxide or sodium hydroxide called transesterification (Hafman, 2003). The catalyst used to hydrolysis the trig ...

(4 pages) 44 0 3.5 Jul/2007

Subjects: Science Essays > Biotechnology

The Relationship between Heat and Amount of Reaction

tubesTest tube rackThermometer2 x Measuring cylindersHydrochloric acid (2.0 M, 1.0 M, 0.5 M, 0.1 M)Sodium hydroxide (2.0 M, 1.0 M, 0.5 M, 0.1 M)4.0Procedure:1.10mL each of the acid solution and hydro ...

(1 pages) 15 1 4.0 Oct/2007

Subjects: Science Essays > Chemistry

Is Biodiesel a viable alternative to petroleum for tucks and buses?

(a substance that increases the rate of the chemical reaction) such as potassium hydroxide (KOH) or sodium hydroxide (NaOH). The triacylglycerols are separated into methyl esters (an organic compound ...

(3 pages) 21 0 5.0 Aug/2008

Subjects: Science Essays > Chemistry

Hess's Law

n, measuring glass (200 cm3), and a regular glass container. The chemicals needed for this lab are: Sodium hydroxide in tablet-form, 0.5 moles of NaOH and HCl, and an additional 0.25 moles of HCl.Duri ... of water in the thermos and measured the temperature as precise as we could. Then we weighed 2 g of Sodium hydroxide tablets in a glass container and started stirring it with the water. After they wer ...

(4 pages) 2889 0 0.0 Sep/2008

Subjects: Science Essays > Chemistry

Aluminium Extraction from the Lithosphere

xite to produce alumina. In the process the bauxite is digested by mixing it with a hot solution of sodium hydroxide, NaOH at 175oC. This dissolves the oxides of aluminium and silicon, but the other i ...

(3 pages) 15 0 0.0 Feb/2009

Subjects: Science Essays > Chemistry

Science- Biology Practical Urine

loudy suspension, it is positiveApparatus:Benedict solutionurine samplepotassium hydroxide solution/sodium hydroxide solutioncopper sulphate solutionsilver nitratetest tubespipetteResults:Urine sample ...

(2 pages) 3682 0 3.0 Mar/2009

Subjects: Science Essays > Biology

Enthalpy Of Solution Lab Report Assessed on: * Data Collection and Processing (DCP) * Conclusion and Evaluation (CE)

The aim of this investigation was to determine the enthalpy of the solution created when dissolving Sodium Hydroxide (NaOH) in water (H2O).TheoryWhen a solid ionic compound is dissolved in water a cha ... ange when one mole of the substance is dissolved in water to form aqueous solution. �ChemicalSodium Hydroxide (NaOH)ProcedureThe recommended amount of compound ito use is around 0.1 moles.Add w ...

(8 pages) 31 1 5.0 Mar/2009

Subjects: Science Essays > Chemistry