Measurement of the Heat of Neutralization of an Acid CHM 152IN CRN: February 5‚ 2000 I. Purpose of Experiment The purpose of this lab is to measure the heat released in the reaction of an acid and a base. This will demonstrate an enthalpy reaction‚ showing energy being released. II. Chemicals and Equipment The following chemicals and equipment will be utilized for the experiment: |Chemicals |Equipment
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Determining the unknown concentration of HCl via heat of neutralization of a reaction involving strong electrolytes and weak electrolytes. Myeongwon Lee 20522885 Partner: Frank Wong TA: Afsoon CHEM 120L – Earth Science & Chem 149 Section: 004 Tuesday‚ November 26th‚ 2013 Introduction All chemical changes are accompanied by change in energy and this energy is in form of heat. The energy change of a reaction that happens at constant pressure is defined as heat of reaction or enthalpy change and the
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change during a neutralization reaction Introduction: When an alkali neutralizes an acid‚ a salt and water are formed. Aqueous hydrogen ions (H+(aq)) from the acid react with the hydroxide ions (OH-(aq)) from the alkali‚ forming water. For hydrochloric acid and sodium hydroxide: H+(aq) + Cl-(aq) + Na+(aq) + OH-(aq) → Na+(aq) + Cl-(aq) + H2O(l) Hydrochloric acid Hydrochloric acid Sodium Chloride Sodium Chloride Sodium Hydroxide Sodium Hydroxide Neutralization is an exothermic
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Neutralization Titrations: The Determination of Sodium Carbonate from Unknown Soda Ash Unknown # I. Purpose: The goal of this experiment is to determine the weight % of Na2CO3 through the preparation of NaOH and HCl standards. The molarity of the standards will be found through titration of KHP for NaOH‚ HCl vs the known NaOH‚ and the unknown Soda Ash sample vs the known HCl. II. Equations and Sample Calculations: Titration of HCl with NaOH: Complete Equation: HCl (aq) + NaOH (aq)
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------------------------------------------------- Techniques for creative teaching Creativity Home About Creativity Defining creativity Elements of creativity Fostering creativity Teaching Creative teachers Techniques for creative teaching Creativity as a course module Evaluating creativity Learn More Resources Research Creative teaching In order to teach creativity‚ one must teach creatively; that is‚ it will take a great deal of creative effort to bring out the most creative thinking
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The Idea of Technique tech·nique [tek-neek] 1. Method of performance; way of accomplishing. 2. Technical skill; ability to apply procedures or methods so as to effect a desired result. Acquiring technique is mostly a process of brain/nerve development‚ not development of finger strength. Skill is acquired in two stages: (1) discovering how the fingers‚ hands‚ arms‚ etc.‚ are to be moved‚ and (2) conditioning the brain‚ nerves‚ and muscles to execute these with ease and control. Many
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GLOSSARY OF TECHNIQUES USED TO CREATE MEANING Active voice/passive voice Writing that uses the forms of verbs which create a direct relationship between the subject and the object. Active voice is lively and more direct. Eg. ‘We had fun’ is written in the active voice; ‘Fun was had’ is written in the passive voice. Alliteration The repetition of the consonant sounds at the beginnings of words. It is used to produce sound that adds to the atmosphere or mood of the words‚ or perhaps
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English Techniques Allegory Story with a double meaning: one primary (on the surface) and one secondary. The representation of abstract ideas or principles by characters‚ figures/ events in narrative‚ dramatic or pictorial form. Alliteration Repetition of consonants at the start of words or in a sentence or phrase. Anaphora The repetition of a word or phrase at the beginning of successive clauses. Anecdote A short and amusing or interesting story about a real incident or person. Illustrate
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ALLITERATION is the repetition of consonant sounds in a series of words. If the consonants are the same but the sounds are different they do not alliterate. eg. "...the grease that kisses the onions with a hiss." from WILLIAM STREET by Kenneth Slessor ALLUSION is the reference to well-known figures and/or other texts eg. "And thrice I heard the Cock crow thinking I knew it’s meaning well." from COCK CROW by Rosemary Dobson The reference here is to the denial of Jesus after his arrest by
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a coffee cup calorimeter was used to measure the temperature readings of a neutralization reaction and magnesium oxide‚ MgO. Calorimetry is used to measure amounts of heat transferred to or from a substance.2 The difference of temperatures was used to calculate the heat energy given off by each sub-reaction. These values were solved by using Hess’s Law which determined the overall enthalpy changes of the neutralization reaction and MgO formation. Hess’s Law states that the heat evolved or absorbed
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