RESULTS AND CALCULATIONS Ligroin Toluene Ethanol H2O Anthracene Did not dissolve Slightly dissolved Did not dissolve Did not dissolve Benzoic acid Did not dissolve Dissolved Slightly dissolved Did not dissolve Phthalic acid Almost dissolved Almost dissolved Did not dissolve Dissolved Resorcinol Dissolved Dissolved Dissolved Dissolved Sodium naphthionate Did not dissolve Did not dissolve dissolved Dissolved Table 1. Results for the five compounds tested in four different solvents. Functional Group
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equations: (a) x(x + 1)y = 1 (b) (sec(x))y = cos(5x) (c) y = e(x−3y) (d) (1 + y)y + (1 − 2x)y 2 = 0 Use www.graphmatica.com to sketch the functions you found as solutions of [a]-[d]‚ if y = 1/2 at x = 1. Graphmatica can also directly sketch the graph if you insert the equation itself; for example‚ in [a] you just enter x(x + 1)dy = 1 {1‚ 1/2}. [curly brackets for the initial conditions‚ with x followed by y.] Here dy represents y . Use this to check that your answers were correct. 2. Experiments
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Kinetic study of a Solvolysis (Sn1) Reaction Aneadra Bowles Adasia Rutledge Krystal Flakes Robert Grimes Jasmine Ross June 5‚ 2012 Purpose: The purpose of this experiment is to use kinetics to study a solvolyis reaction Introduction: The purpose of this experiment is to understand the kinetics of the hydrolysis of t-butyl chloride.The kinetic order of reaction was studied under the effects of variations in temperature‚ solvent polarity‚ and structure. It is particularly observed in
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different rate constant. The findings from Part B of the experiment proved that the reaction followed the SN1 mechanism‚ with the increased concentration of water in the water/acetone mixture causing the reaction rate to increase due to the usage of polar solvents to stabilize the carbocation being produced during this mechanism in the slow‚ rate-determining step [5]. However‚ there were errors in the experiment‚ which led to the results being slightly off from theory‚ such as the lower than expected
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Mrs. Elena Gallagher By: Anna Villanella March 25‚ 2014 Oil is a nonpolar molecule. Polar molecules have charged groups or atoms. Nonpolar molecules have no charged groups or atoms. Polar molecules‚ like water‚ are good solvents for other polar molecules. This means they molecules that react with the water disperse into the water. Nonpolar molecules don’t disperse in water because nonpolar molecules and polar molecules don’t interact. How exactly can we discover the effect of emulsifiers‚ and what
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INTRODUCTION Plant pigments consist of four main chemicals. These are Chlorophylls‚ The carotenoids‚ Anthocyanin and Betacaine. The aims of this experiment is to separate the plant pigment into different colours using solvents and column chromatography. The hypothesis of this experiment is that this plant pigment from spinach will contain the chlorophyll pigment or may contain the others too. Chlorophyll: Chlorophyll a is the main component of the plant pigments. This is used for the most
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chromatography. Thin layer chromatography (TLC) was performed by using a mobile phase and a stationary phase. The mobile phase was a nonpolar solvent composed of ethanol and ethyl acetate. The solid stationary phase was coated with silica gel‚ which is very polar. The amino acids were spotted onto two TLC plates; the plates were then placed in a chamber which contained the mobile phase. The plates were sprayed with 0.1% Ninhydrin and placed in an oven. The distance of the traveled spots and the solvent front
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Qatar University Mechanical and Industrial Engineering Department MECH 223 Solid Mechanics L51 Spring 2013 Term Project Group no. (6) Course Instructor: Dr. Mohammed Al-Qaradawi T.A: Eng. Salim Mohandes Group members: Amal Bsaisu 201002072 Nada Mamdouh 201105374 Nazha Ghadban 201104186 Ola Al-Masri 201103017 Samar Nasr 201000137 Due Date: 3-6-2013 Abstract: In this project we were asked
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The objective of this experiment is to demonstrate and explore how chemical reactivity is affected by variations in these properties. ~Atomic radius‚ ionization energy‚ electron affinity‚ effective nuclear charge and electronegativity are a just a few such parameters. Part A of this lab deals with the solubility of dissolved ions. The two primary factors involved when an ionic solid is dissolved (dissolution) in water are dissociation and solvation. --Dissociation‚ the separation of the
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Waals forces include dispersion forces or London forces‚ dipole-dipole forces‚ and dipole-induced dipole forces. A particularly strong type of dipole-dipole interaction is hydrogen bonding. Dispersion Forces or London Forces Observed between non-polar molecules. Atoms and nonpolar molecules are electrically symmetrical and have no dipole moment because their electronic charge cloud is symmetrically distributed. But‚ at a particular instant of time‚ a dipole may develop momentarily. Therefore‚ electronic
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