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
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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
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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
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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
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form acidic solution pH of aqueous solution 14 9 7 7 1 3 Acid-base nature Basic Basic Amphoteric Acidic Acidic Acidic Conductivity of liquid Conductor Conductor Conductor Insulator Insulator Insulator Solubility in hexane Insoluble Insoluble Insoluble Soluble Soluble Soluble Structure Giant ionic structure Giant ionic structure Ionic with covalent character Giant covalent structure Simple molecular structure Simple molecular structure Bonding
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v/v) and hexane of plants traditionally used as medicines as Valeriana jatamansi (Sugandhbala)‚ Coleus barbatus (Pathar choor)‚ Berberis aristata (Kingore)‚ Asparagus racemosus (Satrawal)‚ Andrographis paniculata (Kalmegha)‚ Achyranthes aspera (Latjiri)‚ Tinospora cordifolia (Giloei)‚ Plantago depressa (Isabgol) were evaluated against Aspergillus niger and Candida albicans. Hydro-alcoholic extracts of all the plants were found to have maximum antifungal activity in comparison to hexane extracts.
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colored eluate was then collected and applied in precoated thin layer chromatography plate by spotting it ten times. Afterwards‚ the precoated thin layer chromatography plate was placed inside the closed beaker with 15 milliliter of dichloromethane-hexane and filter paper. The chromatography plate was removed; it was visualize under ultraviolet light; then‚ retention was measured at each components. Therefore‚.... INTRODUCTION Chromatography can be explained as the separation of mixture into
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Chromatography (TLC) Plating: This is a common method that is used to monitor the progress of a reaction and determine when it is complete. In our chromatography there was a stationary phase/adsorbant of Silica gel and we used mobile phases of ethyl acetate‚ hexanes‚ and a 2:8 mix of both. During the process‚ the mobile phase passes over the compound spots at the bottom and drags them up the adsorbant. The resulting spots where the compounds stop can be used to measure their polarity and solubility in the mobile
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crushed seeds taken in 100 or 250ml Iodine value(IV) flask * Add 60 to 90ml of Hexane In IV flask and shake it well and close by using stopper * Wait for 5min * Take 50 or 100ml beaker and make the filter paper in round shape and place it beaker * Now pour the Hexane mixed with seed sample in the filter paper * Collect filtered Hexane mixed oil in the beaker and place it in hot plate. * The Hexane evaporates
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Silica gel in TLC 2 was polar and the solvent ethyl acetate-hexane is non-polar it moved relatively with the solvent. The stationary phase in TLC 3‚ alumina is non polar and the solvent ethyl acetate is polar so from the ideal that polar does not attract non-polar benzophenone stick stronger to alumina non-polar rather than moving up with polar solvent ethyl acetate as it did in tlc2. 6. Ethyl acetate is polar and Ethyl acetate- hexane is nonpolar‚ use of polarity differences. Because the polarity
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