"Sodium Hydroxide" Essays and Research Papers

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Sodium Hydroxide

Abstract. This report is about how to standardize a Sodium Hydroxide (NaOH) solution by titrating it with pure sample of Potassium acid Phthalate (KHC8H4O4). This experiment has two sections. The first section is to standardize the Sodium Hydroxide by titration. Three sample of 0.7 – 0.9 g of solid KHP are place into each of the three numbered Erlenmeyer flasks. 50 ml of distilled water are added to each three of it from graduated cylinder and constantly shake it until the KHP solution are completely...

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Standardization of Sodium Hydroxide

12-STANDARDIZATION OF SODIUM HYDROXIDE Standard solutions for titrations are especially pure mixtures with exactly known concentrations. Primary standards are very pure solids. They have the advantage that they can be weighed (the analytical balance is normally the most accurate instrument in the laboratory) and they are stable under laboratory conditions. In this experiment, the primary standard is oxalic acid dihydrate, H2C2O4 ( 2H2O. It will be used to standardize a solution of sodium hydroxide. ...

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Analysis of Acid by Titration with Sodium Hydroxide

Stephanie Thao Chemistry 1151 Laboratory Analysis of acid by titration with sodium hydroxide Ms. Hoang November 2012 Introduction: The purpose of this experiment is to demonstrate an example of how to determine the unknown molarity of hydrochloric acid by titration with a base (sodium hydroxide). Titration is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of an identified analyte (wekipedia). The first step will be measuring...

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Preparation and Standardization of a Sodium Hydroxide Solution

Title: Preparation and Standardization of a Sodium Hydroxide Solution Objective/Purpose: The objective of this experiment will be the standardization of sodium hydroxide using potassium hydrogen phthalate by the titration method. Introduction: The concentration of solutions can be reported in terms of molarity and normality. Molarity is equal to: HCL, HBR, H2SO4, HNO3 M = mol Solute (mol) (Monoprotic) (Diprotic) _______________ V(L)g solutions (L) ...

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Neutralizing Sodium Hydroxide Using Different Concentrations of Hydrochloric Acid

Neutralization experiment AIM:-  To investigate how heat is given out in neutralizing sodium hydroxide  (NaOH) using different concentrations of Hydrochloric Acid.  Background Information:-  Substances that neutralize acids are called alkalis. An acid is a  substance that forms hydrogen ions (H+ ) when placed in water. It can  also be described as a proton donor as it provides H+ ions. An  example of an acid is hydrochloric acid (HCl), Sulphuric acid (H2SO4)  etc. An alkali is a...

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preparation of sodium chloride through titration

 Preparation of Sodium Chloride through titration Abstract: acid-base titration is a technique commonly used to determine the moles of acid in a sample by adding a known volume of strong base of a known concentration. The strong base provides the hydroxide ion, to react quantitatively with the acid. The point at which the acid is completely and exactly consumed the known quantity of base is called the equivalence end point and is signalled by a colour change in the solution...

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Thermochemistry: Solid Sodium Hydroxide

using a styrofoam calorimeter. The three reaction are shown below. Reaction 1: The dissolving of solid sodium hydroxide in water.                         NaOH(s) ---> Na+(aq) + OH-(aq) + heat Reaction 2: The reaction of solid sodium hydroxide with dilute hydrochloric acid.                  NaOH(s) + H+(aq) + Cl-(aq) ---> Na+(aq) + Cl-(aq) + H2O Reaction 3: The reaction of sodium hydroxide solution with dilute hydrochloric acid solution.       Na+(aq) + OH-(aq) + H+(aq) + Cl-(aq) ---> Na+(aq)...

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Sodium Benzoate: Chemical Changes at the pH Level Encountered in the Acidic Environment of the Stomach

contracted by a local food manufacturer to determine if sodium benzoate, a common food preservative, undergoes significant chemical changes at the pH level encountered in the acidic environment of the stomach. Experimental Method Sodium benzoate was prepared by addition of an equimolar amount of aqueous sodium hydroxide (3 M, ~ 20 ml) to a benzoic acid (1.256 g, 10.3 mmol) /water mixture (10 ml). Benzoic acid is insoluble in water. The hydroxide base rapidly deprotonates the acid, producing the benzoate...

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Determination of the Rate Constant

This experiment was an intermediate event and such a reaction is most often called hydrolysis and is represented by the equation: C4H9Cl + H2O  C4H10O + HCl. Experimental A burette was rinsed with 0.25M sodium hydroxide. The burette was drained and refilled with the sodium hydroxide solution. 100mL of isopropyl alcohol/water solvent was placed in a 100 mL volumetric flask. This solution was put into a 250 mL flask in a constant temperature water bath and the temperature of the bath and the...

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Calculation on the Molar Enthalpy Change of a Neutralization Reaction

chemicals concentration Volume Water used for diluting Materials Name of materials Measuring cylinder Measuring cylinder Beaker Stirring rod Thermometer Balance Constant temperature tank stopwatch Safety goggle Sulfuric acid 18 mol V-1 10ml 125ml Sodium hydroxid 12 mol V-1 15ml 105ml Condition 10 ml 100ml 50ml Including poise Including plastic stir bar Number of materials used 1 2 1 1 1 1 1 1 1 Procedures 1. Dilute both solutions H2SO4 and NaOH, from the given concentration to 1M and...

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