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
Premium
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)
Premium
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
Premium Chromatography Solubility Solvent
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
Premium
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
Premium Gas Water Ethanol
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
Premium Color Visible spectrum Chlorophyll
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
Premium Carbonyl Aldehyde Benzene
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
Premium Solvent Plant Photosynthesis
a 100mL graduated cylinder‚ a rubber stopper‚ chromatography paper‚ forceps‚ cuvettes‚ spinach leaves‚ hexane-acetone‚ acetone‚ and the spectrophotometer to record the wavelength. To start the experiment I first pipette 10mL of hexane-acetone into a 100mL graduated cylinder and put the rubber stopper on to prevent any of the solution from evaporating. While letting the hexane-acetone set I then prepared my chromatography strip but first cutting it to 20 centimeters and then cutting one end to
Premium Chlorophyll Photosynthesis Plant
paper Labels or Pictures of the following products: gasoline‚ acetone‚ kerosene‚ acetic acid‚ LPG‚ ethanol Procedure: 1) With your group mates‚ use the labels/pictures of the materials to answer the following questions: a.) Complete the table about the uses of the compounds. Indicate using a check mark the uses of compounds. Table 1. Organic Compounds and their Uses Organic Compounds Gasoline Ethanol Acetone LPG Kerosene Acetic Acid Uses Beverage Food Antiseptic
Premium Carbon Hydrocarbon Ethanol