Phenolphthalein TS C6H4OCOCH3COOH + NaOH C6H4OCOCH3COONa+ H2O Assay of Metacholine Chloride Non Aqueous Acidimetry Blank titration Perchloric acid Mercuric acetate TS Crystal violet TS 2 Cl- + Hg (OAC)2 + 2HClO4 2 ClO4- + 2HOAc + 2HgCl2 Assay of Phenytoin Non Aqueous alkalimetry Blank titration Sodium methoxide Saturated sol’n of Azo violet in Benzene H C6H5 N--C=O C C6H5 C-NH + CH3O- O C6H5 N=C-O
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are constantly occurring. We are dependent on them. The air that we breathe‚ the food that we eat‚ and thousands of other simple and confusing things depend on chemistry. In this particular case‚ the relationship between Polyvinyl Alcohol (PVA) and Sodium Borate (Borax) is being investigated. PVA is a water soluble synthetic polymer (Maciborski‚ and Salamone)‚ while Borax is a natural mineral with many household uses. It can be used as herbicide‚ to bleach teeth‚ as a household cleaner‚ and a laundry
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Modern methods of food production have altered radically from processes used in the past. Many food producing companies have invented their own improved techniques of cooking. Most of these procedures contain numerous different forms of chemical additives and one of the newest chemical substances that will enhance food flavor is monosodium glutamate (MSG). Even though it has no taste of its own‚ it intensifies considerably the taste of a wide variety of food as well as revealing flavors that could
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silicates in the glass are attacked by the HF(aq). Sodium silicate(Na2SiO3)‚ for example reacts as follows: 1 Na2SiO3(s) + 8 HF(aq) H2SiF6(aq) + 2NaF(aq) + 3H2O(l) a. How many moles of HF are needed to react with 0.300 mol Na2SiO3? b. How many grams of NaF form when 0.500 mol of HF reacts with excess sodium silicate? c. How many grams sodium silicate can react with 0.800 g of HF? 4. Automotive air bags inflate when sodium azide‚ NaN3‚ rapidly decomposes to its component
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II. Rationale The history and usage of ink can be traced back to the 18th century B.C.‚ with the utilization of natural plant dyes‚ animal and mineral inks based on such materials. Ink is a pigment in a liquid form or paste form used as colorants and dyes. Ink provides much of the color on paper in the modern world and has many uses in different cultures around the globe. Also‚ they are becoming more and more expensive because of their increasing purposes. Although ink is universally available
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To remove copper penicillamine‚ zinc salts and/or trientine are used. Galzin is used to get rid of some physical symptoms of the Wilson’s disease. It is necessary to take 50MG of Galzine three times a day for it to work properly. Sometimes Zinc Acetate is given to block the absorption of extra copper. It is also necessary for a person with Wilson’s disease to have a different diet. They often have a depletion of pyridoxine or B-6 and need supplements of 25MG daily. The food they eat should stay
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BCH3015 Organic Chemistry Name: Chun Ka Yuen (52180145) Group: C Date of experiment: 30/3/2012 Date of report: 3/4/2012 Experiment 5: Polymers Aim: This experiment is to prepare polymeric materials including polystyrene‚ Nylon6‚ 10‚ and cellulose triacetate. Introduction: A polymer consists of repeating subunits in the form of –A-A-A-A-A- or A-B-A-B-A-B-‚ where A and B are different subunits. These sub-units are typically connected
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Synthesis of Isopentyl Acetate (Banana Oil) Using A Fischer Esterification Reaction Purpose: The purpose of this experiment is to synthesize Isopentyl Acetate using a Fischer esterification reaction. Fischer esterification is an acid-catalyzed condensation of an alcohol and a carboxylic acid‚ yielding an ester and water. Isopentyl Acetate has the scent of banana oil‚ once synthesized it will be purified by distillation. Then the analysis of the sample using H NMR and IR will determine purity
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How did the amount of Sodium Citrate‚ an anticoagulant‚ added to a Calcium Chloride solution affect the volume of the clots formed when a sodium alginate solution‚ a blood simulation‚ was introduced? Mackenzie Keesor (Fall Semester 2017-2018) Purpose The purpose of this experiment was to observe the differences in the formation of simulated blood clots when different amounts of sodium citrate‚ an anticoagulant‚ was added to the coagulation process‚ which would help gain information about the process
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condensation formed from the heptane flame. Reactants: C7H16 and O2 Products: CO2 and H2O Balanced chemical equation C7H16 + O2 7CO2 + 2H2O Table 8.3- Single replacement reaction of sodium Observations Test tube was hot after reaction; exothermic reaction took place; sodium was malleable; when sodium was added to diH2O it popped and fizzled; solution turned pink when phenolphthalein was added. Reactants: Na and H2O Products: H2 and NaOH Balanced chemical equation 2Na + 2H2O 2NaOH
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