Opis: Green Chemistry Laboratory Manual for General Chemistry - Sally Henrie

Green chemistry involves designing novel ways to create and synthesize products and implement processes that will eliminate or greatly reduce negative environmental impacts. The Green Chemistry Laboratory Manual for General Chemistry provides educational laboratory materials that challenge students with the customary topics found in a general chemistry laboratory manual, while encouraging them to investigate the practice of green chemistry. Following a consistent format, each lab experiment begins with objectives and prelab questions highlighting important issues that must be understood prior to getting started. This is followed by detailed step-by-step procedures for performing the experiments. Students report specific results in sections designated for data, observations, and calculations. Once each experiment is completed, analysis questions test students' comprehension of the results. Additional questions encourage inquiry-based investigations and further research about how green chemistry principles compare with traditional, more hazardous experimental methods. By placing the learned concepts within the larger context of green chemistry principles, the lab manual enables students to see how these principles can be applied to real-world issues. Performing laboratory exercises through green experiments results in a safer learning environment, limits the quantity of hazardous waste generated, and reduces the cost for chemicals and waste disposal. Students using this manual will gain a greater appreciation for green chemistry principles and the possibilities for future use in their chosen careers. "...a welcome change and direction for enriching the laboratory experience of students." -Colin F. Poole, Wayne State University, in Chromatographia "Quel joli titre prometteur : un manuel de laboratoire dedie a la chimie verte ! Le sujet est a la mode, les enseignants sont preneurs de toute nouveaute dans le domaine, plongeons-y donc. La lecture du sommaire nous fait vite dechanter; ce manuel est une compilation de manipulations de chimie-physique et de chimie generale faites et refaites, disons eculees : determination du pourcentage d'eau d'un sel, de la formule du sel de cuivre, du volume molaire d'un gaz, d'une masse molaire, d'une enthalpie de solvatation et un peu de chimie analytique appliquee a des produits de la vie courante : CCM des M&M's(R), acidite d'un ketchup, preparation d'une solution tampon, determination d'un ordre de reaction, quelques titrages... Notons que ce livre est dedie aux " undergraduate " americains. Chacun des vingt et un chapitres se structure de la facon suivante : une introduction de contextualisation souvent bien faite, un descriptif de la manipulation ou toutes les informations sont fournies (equations de reactions, relations mathematiques, exemples de calculs, tableaux de proportionnalite, etc.), un objectif clairement enonce, des questions " prelab ", un protocole ou chaque operation est decrite dans ses moindres details (aucune place n'est laissee a la creativite et a l'investigation), des feuilles de resultats remplissables par les etudiants, une partie " calculs " et une partie " analyse " ou la aussi l'etudiant est tres guide. Le chapitre se termine par deux rubriques : la premiere, " Think green ", propose quelques questions en lien avec le chapitre et etend les connaissances vues. La seconde, " Presidential green chemistry challenge ", exploite des resumes issus d'un concours existant depuis 1996, stockes sur un site Internet*. On s'etonnera de voir Monsanto et Dow Chemical parmi les premiers recipiendaires... Dans cette rubrique, l'auteur demande de lire un article en ligne et d'en faire un resume, une analyse courte. L'approche est interessante mais toutefois a nuancer en precisant que ces courts articles ne font qu'enoncer des resultats vulgarises sans details ni valeurs le plus souvent, tout etant le fruit d'entreprises privees dont les technologies sont protegees par des brevets. Notons qu'il n'est fait nulle part reference aux incertitudes (excepte de facon tres superficielle p. 168), hormis des ecarts relatifs calcules par rapport a des " valeurs theoriques " hypothetiques, sans jamais chercher a s'interesser a raisonner ou reflechir sur le resultat obtenu. On rencontre egalement des problems dans les equations de reactions : les composes ioniques sont le plus souvent ecrits sous forme de formule brute et non sous forme ionique. On y lit des notations qui peuvent nous sembler aberrantes, comme KCl(aq) pour designer la solution ionique. On notera des unites curieuses, comme la constante des gaz parfaits exprimee en L.atm.mol-1.K-1 ou les conditions standard de temperature et de pression a 273 K et 1 atm, des equations improbables comme (p. 68) : " kJ heat = -(100.012 g H2O)(4.186 J/g C)(-5.7 C)(1 kJ/1000J) = 2,39 kJ [...] ". En resume, si l'intention est louable, une nouvelle edition revisitee est tres souhaitable." -Xavier Bataille, in Livres et Media of l'actualite chimiqueDetermining the percent of water in epsom salt Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Determination of the formula of a copper supplement Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Determination of mass and mole relationships in a chemical reaction Example Atom economy Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Finding ethanol's molar mass using vapor density Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Determining molar volume of a gas at standard temperature and pressure Example Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Determining the enthalpy change for solvation reactions Example Example Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Spectroscopic determination of food dye in popsicles Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Separation of food dyes by paper chromatography Example Rf calculation Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge What is the best solution to lower a freezing point? Example Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Standardization of a sodium hydroxide solution Example Objective Prelab questions Procedure Data Observations Analysis Think green Presidential green chemistry challenge Determining the amount of acid in ketchup and hot sauce Example: Calculating the moles of acid in diet cola Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Using an appropriate indicator for acid-base titrations Example Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Preparation and properties of buffer solutions Example Calculations Objective Prelab questions Procedure Data Observations Analysis Think green Presidential green chemistry challenge Determination of the rate of reaction and its order Example Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Equilibrium constant for ferric ion-salicylic acid complex determination Example Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Determination of amount of ascorbic acid in a vitamin C tablet by redox titration Example Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Qualitative analysis of metal cations and using ion-selective electrodes Objective Prelab questions Procedure Data Analysis Think Green Presidential green chemistry challenge How to determine the order of an electrochemical series Objective Prelab questions Procedure Data Observations Analysis Think green Presidential green chemistry challenge Voltaic cells and how batteries are made Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge Synthesis and chemical analysis of sodium iron (III) EDTA Example Example Objective Prelab questions Procedure Data Observations Observations Calculations Analysis Think green Presidential green chemistry challenge Analysis of biodiesel synthesized from canola oil Objective Prelab questions Procedure Data Observations Calculations Analysis Think green Presidential green chemistry challenge

Szczegóły: Green Chemistry Laboratory Manual for General Chemistry - Sally Henrie

Tytuł: Green Chemistry Laboratory Manual for General Chemistry
Autor: Sally Henrie
Wydawnictwo: Apple
ISBN: 9781482230208
Rok wydania: 2015
Ilość stron: 384
Oprawa: Miękka
Waga: 0.64 kg

Recenzje: Green Chemistry Laboratory Manual for General Chemistry - Sally Henrie