TLC FULL LAB REPORT Objective: The purpose of this experiment was to identify compounds in a mixture by Rf values and to determine the best solvent to use. Also is the analysis of mixtures before‚ during and separation. Possible solvents: Hexane MW- 86.17 g/mol Hazards-flammable‚ harmful if swallowed Melting pt / boiling pt (degree Celsius) - 69 Density-.6548 g/ml [pic] Methanol MW-32.04 g/mol Hazards- flammable‚ eye irritant Melting pt / boiling pt- 65 Density-.7918 g/ml [pic]
Premium Thin layer chromatography Solvent Ethanol
Title: Redox Reaction Introduction: Some of the most important chemical reactions are Redox reactions. They are also known as oxidation-reduction reactions. This reaction passes one or more electrons from one species to another. The species that loses electrons are being oxidized while the species that gains electrons are reduced. The reaction occurs simultaneously. Numbers are given to each element in a chemical reaction to help us find out which element is oxidized and which is
Premium Hydrogen Iron Zinc
was then produced by the filtered solution of crude acetanilide and recrystallizing solvent. Choosing of the recrystallizing solvent was done by placing a small amount of pure acetanilide in three test tubes‚ each containing: water‚ 95% ethanol and hexane. The final weight produced by the pure acetanilide is 1.1g contrary to the weight of the crude of the acetanilide which is 0.5g. Quantitative analysis showed that the pure acetanilide produced 37.04% percentage yield. Introduction Recrystallization
Premium Solvent Solubility Temperature
Abstract In the asymmetric synthesis of (S)-Ibuprofen‚ the compound is synthesized in nonracemic form directly from an achiral precursor. First‚ racemic ibuprofen was converted to aN achiral ketene via the acid chloride by adding thionyl chloride followed by triethylamine. Then‚ ketene was reacted with a chiral and nonracemic (S)-ethyl lactate produces a mixture of diasteromeric esters of ibuprofen derivatives where (S) configuration is predominantly. Finally‚ hydrolysis of the ester then provides
Premium Hydrogen chloride Ester Solvent
acetone was added to the spinach leaves and mixed as before‚ repeated twice. 5. 25 mL of hexane was added to the separatory funnel and mixed with venting. 6. 25ml of saturated sodium chloride was added to the separatory funnel and mixed. 7. The aqueous layer was collected in a beaker and the organic layer was placed in another layer. 8. The aqueous layer was then extracted with 25 mL of hexane and the organic layers combined. 9. The combined organic layers were then extracted with
Premium
Sr(NO3)2 | Milky White | Milky White solid | Milky White | Clear yellow hinge | **Unknown #8 reacted with 1M H2SO4 and turned Milky White Oxidizing ability of halogens | Cl2(Hexane) | Br2(Hexane) | I2(Hexane) | Cl- | x | | | Br- | | x | | I- | | | x | **** Unknown #8 reacted with Cl2(hexane) which made Calculations: Not applicable Discussion: In part c of the experiment we were asked to list the 4 alkaline earth metals in the order which they should appear in
Premium Periodic table Group
VOL. 6‚ NO. 9‚ SEPTEMBER 2011 ARPN Journal of Agricultural and Biological Science ©2006-2011 Asian Research Publishing Network (ARPN). All rights reserved. ISSN 1990-6145 www.arpnjournals.com PROMISING ANTIFUNGAL EFFECT OF SOME FOLKLORIC MEDICINAL PLANTS COLLECTED FROM EL- HAMMAM HABITAT‚ EGYPT AGAINST DANGEROUS PATHOGENIC AND TOXINOGENIC FUNGI Department of Bioprocess Development‚ Genetic Engineering and Biotechnology Research Institute‚ Mubarak City for Scientific Research and Applied Technology
Premium Fungus Plant Plant pathogens and diseases
Analysis of Hydrocarbons Leoncito‚ Alyssa Lynn‚ Libatique‚ Keith Martin P.‚ Ligot‚ Nestlhyn B.*‚ Lim‚ Jamie Therese T. Department of Psychology‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Four organic samples: hexane‚ cyclohexene‚ napthalene and toulene were given to serve as reference standards to characterize and distinguish four unknown given samples. Nitration‚ bromine and basic oxidation testswere conducted to classify the different samples from being an aliphatic‚ or aromatic
Free Benzene Hydrocarbon Carbon
When choice bioassay was carried out‚ the hexane and methanol extracts from roots of A. paniculata did not show any significant activity at various treatment doses‚ when observations were taken after 24 hours (table 2). When the observation period was extended to 48 hours‚ antifeedant activity significantly enhanced to 50.53 % at maximum dose (0.1 %) with hexane extract. Antifeedant activity was significantly superior at the higher doses of 0.03%‚ 0
Premium Bacteria Microbiology Escherichia coli
goal of this experiment was to separate Toluene and Hexane by distillation and gas chromatography based on their difference in boiling points. The boiling point of hexane is 69 degrees Celsius and the boiling point of toluene is 110 degrees Celsius. Three fractions were collected for both simple and fractional distillation. The first fraction was hexane since it had the lower boiling point. The second fraction was a mixture of toluene and hexane. The third fraction was toluene since it had the high
Premium Distillation Gas Water