3/5/2011 EXPERIMENT EXPERIMENT 8 OBJECTIVES CONCEPTS REAGENTS PROCEDURE RESULTS DISCUSSION IR ANALYSIS 8 Objectives to differentiate various types of oxygen-bearing organic compounds to device a scheme to distinguish each functional group Analysis of Oxygen-bearing Organic Compounds alanx3@yahoo.com OBJECTIVES CONCEPTS REAGENTS PROCEDURE RESULTS DISCUSSION IR ANALYSIS to characterize an unknown sample through parallel chemical tests ARMSALCEDO ARMSALCEDO alanx3@yahoo
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hematology market is estimated to grow at a lower CAGR in developed countries; however‚ it is expected to witness high growth in emerging countries such as China‚ India‚ and Brazil in the next five years. The growth of the Hematology analyzers and Reagents market is driven by factors such as increasing adoption of automated hematology instruments by diagnostics laboratories‚ growing development of the high throughput hematology analyzers‚ integration of basic flow-cytometry techniques in modern hematology
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Reducing Sugars Testable Question: Are all carbohydrates reducing sugars? Hypothesis: If the carbohydrate contains available ketone or aldehyde molecules then they are reducing sugars. Variables: a. Independent: Function groups react w/ reagent b. Dependent: Color change (red‚ orange‚ yellow) Control: Water Materials: - 4 mL of each solution (Water‚ Starch‚ Glucose‚ Maltose‚ Sucrose‚ Onion Juice‚ Potato slice‚ Milk) - 8 test tubes - 8 pipetes - Benedicts
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only): aldehyde ( carboxylic acid |n/a | | | | |reagents: potassium dichromate (K2Cr2O7) in sulphuric acid (H2SO4) | | |conditions: warm under reflux |
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The Grignard Synthesis of Triphenylmethanol Abstract: Grignard synthesis of triphenylmethanol was achieved by use of the Grignard reagent phenyl magesium brominde. The organometallic grignard reagent was synthesized by use of a reflux apparatus recrystallization techniques. Once synthesized it was used in a Grignard reaction that involved nucleophilic addition to a carbonyl in order to make triphenylmethanol. The final product was solidified and recrystallized and spectral data was
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reply on the vague claims that companies make about their products. ● Description: Knowing that sugars react to a Benedict’s reagent‚ proteins will react to a Biuret reagent‚ and starch will react to a Lugol’s reagent‚ we will be able to test the presence
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along with limiting reagent analysis. The reaction of Copper (II) Sulfate‚ CuSO4‚ mass of 7.0015g with 2.0095g Fe or iron powder produced a solid precipitate of copper while the solution remained the blue color. Through this the appropriate reaction had to be determined out of the two possibilities. Through the use of a vacuum filtration system the mass of Cu was found to be 2.1726g which meant that through limiting reagent analysis Fe was determined to be the limiting reagent and the chemical reaction
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When there is H2O and snails in the bromthymol blue‚ the reagents will be neutral‚ then the results will be same with the reagent in light and dark. When there is H2O and plants in the bromthymol blue‚ the reagents will be basic‚ as the same with the light one and dark one. When there are H2O‚ plants and snails in the bromthymol blue‚ the reagents in light will turn to neutral but more about basic‚ and the reagents in the dark will be neutral. Question: 1.Explain the color changes you
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Experiment 1: Isolation of Casein from Milk * pH of milk – 6.6 * milk = 87.1% water‚ 4.9 % CHO 3.9 %‚ fats‚ 0.7% minerals Experiment 2: Protein Hydrolysis and Characterization | Reagents | Principle | Test for | Positive Result | Negative Result | Biuret | CuSO4‚ NaOH | Complexation of Cu+2 with amide N atoms | Polypeptide bonds | Violet/purple solution | Blue color solution | Sakaguchi | 10% NaOH‚ 0.02% α-naphtol solution‚ 2% NaOBr | arginine condenses with α-naphtol and NaOH
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Table 1. Observations from week 2 for the detection of ammonia using the Nessler’s reagent and from week 1 for the pH using bromothymol blue indicator with the inoculation of P. vulgaris‚ P. fluorescens‚ and B. Cereus in peptone broth. Tubes were incubated at room temperature for 7 days and 14 days. Soil Microorganism Nessler’s Reagent (color reaction pH (bromothymol blue) Our results pH (bromothymol blue) Class results P. vulgaris Deep yellow ++ 8.0 8.0‚ 7.5‚ 6-7‚ 11.5 P. fluorescens
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