Investigatory project Cassava starch as an effective component for Ideal Biodegradable Plastic Members: Wesley Ong Kyle Cheng Georwin Ng Charles Ngan Raphael Chan Table of contents I. Introduction II. Review of related literature III. Methodology Introduction A. Background of the study The cassava root is long and tapered‚ with a firm‚ homogeneous flesh encased in a detachable rind‚ about 1mm thick‚ rough and brown on
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afterwards. In Chromic Acid Test which was a test for oxidizable compounds or any compounds that possess reducing property would yield to a blue green solution if it reacted positively. This was seen in all the sample used in this test except for acetone. Whereas Dinitrophenylhydrazone (2‚4-DNP) Test was preformed to test for aldehydes and ketones which would result to a yellow orange precipitate if it was positively reacted. All the compounds subjected to this test namely
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laboratory the surface tension of water depends on the concentration of the following solutes; NaCl‚ acetone‚ and sodium dodecyl sulfate (SDS). Intermolecular interactions as well as other phases (solid‚ or air) make a liquid exist. The data collected will show that the surface tension of the liquid is proportional to its equilibrium. Surface tension of water dependant on concentration of NaCl‚ SDS‚ acetone‚ and distilled water all have different results. The different radius results are a consequence
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reagents‚ sodium iodine in acetone and silver nitrate in ethanol. (Below are the reaction equations). We used different substrates‚ which were primary‚ secondary‚ and tertiary. These substrates included 2-bromobutane‚ 2-bromo-2-methylpropane‚ 1-bromobutane ∞-Bromotoluene‚ bromobenzene‚ and I-bromoadamantane. This lab helped discover what kind of mechanisms (either SN1 or SN2) are involved in the performed reactions. 1. Sodium Iodine in Acetone: RX + NaI -----Acetone----> RI + NaX (X=Br)
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Title of Experiment Extraction of Spinach Date that the Experiment was Performed This experiment was performed on Wednesday‚ September 17th‚ 2014 at 2:45 pm in the St Ignatius Science Center Laboratory 323. Partners Names Taylor Jackson and Matt D’Angelo. Taylor‚ Matt‚ and I shared the same data. Purpose/Goals/Objectives The purpose of this experiment was for each student to use column chromatography to separate plant pigments from spinach leaves. Some goals and objectives were to
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the skin from the sun. In the experiment performed‚ dibenzalacetone was created from an aldol condensation of 2 portions of benzaldehyde and acetone in sodium hydroxide. The reaction that occurred in this experiment is known as a specific aldol condensation called Claisen-Schmidt. In the reaction‚ the carbonyl of benzaldehyde reacts quickly with the acetone anion to create a hydroxyketone that dehydrates in the presence of a base to give the desired product. 10 mL of 4M sodium hydroxide was added
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substance mass divided by its molar mass. With this‚ the ideal gas law can be arranged in an equation fit for helping the student determine the molar mass of a gas. Purpose: The purpose of the lab is to find the average molecular weight of ethanol‚ acetone‚ and isopropanol. Pre-Lab Questions: Mass of empty pipet 1.557 g Mass of empty pipet and condensed methyl alcohol 1.571 g Mass of pipet and water 16.001 g Mass of condensed methyl alcohol .014 g Mass of water in filled pipet 14.444 g Volume of pipet
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it was ground in 5 mL of 100% acetone‚ creating a green acetone extract. The extract was filtered through a funnel with a kimwipe and into a test tube. The volume of the filtered extract was estimated‚ and one half of the estimated volume of petroleum ether was added to the solution‚ along with two drops of water. The test tube was then inverted to ensure it was properly mixed‚ and the phases could separate. Experiment 1
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crystalOrange-yellow% recovery of recrystallization:(0.48 g)/(1.6 g) ×100 %=30%Theoretical yield (from prelab): 1.177 gPercent yield(0.48 g)/(1.177 g) ×100 %=40.78% ConclusionThrough this experiment‚ aldehyde reacts with itself in the presence of acetone and base‚ NaOH. Acetone is used as the enolate forming compound‚ adding to the benzaldehyde followed by the dehydration to form a benzal group. As for the low yield (40.78%)‚ it can be attributed to a few factors. The first being that this reaction goes by an
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conduct this experiment: a capillary tube‚ beakers‚ extractions of leaf pigments in acetone‚ forceps‚ scissors‚ acetone‚ a quart jar with a lid containing solvent of petroleum ether and acetone and chromatography paper stapled into a cylinder marked with a pencil line about 1cm from one end. An extract of chloroplast pigments where obtained and a blender was used to rupture the cells. Pigments were then extracted with acetone an organic solvent. Then pigment extracts were separated using paper chromatography
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