2-naphthol‚ and naphthalene. These organic solids are purified by partitioning the solid in 2 immiscible solvents‚ diethyl ether and sodium bicarbonate or sodium hydroxide. II. Significance a. The significance of the Extraction lab is to purify Acetanilide benzoic acid‚ 2-naphthol‚ and naphthalene by determining the partition coefficient. This value is determined by dividing the solubility of the given solute in the extraction solvent (Sodium bicarbonate or Sodium hydroxide)) by the solubility in
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compound. n-heptane‚ pentene‚ benzene‚ heptanol‚ sec-butanol‚ phenol‚ acetyl chloride‚ buteraldehyde‚ benzaldehyde‚ 2-butanone‚ propanoic acid‚ sucrose‚ diethyl ether‚ butyl bromide‚ acetonitrile‚ L-alanine‚ n-amyl acetate‚ benzene sulfonyl chloride and aniline were used as test compounds. Observations were noted‚ such as changes in color and product formation. Iodine test‚ bromine test‚ Baeyer Test‚ Chloroform and aluminum chloride‚ fuming sulfuric acid‚ acetyl chloride‚ chromic acid‚ iodoform‚ Lucas’
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hazardous when ingested or inhaled. The substance is toxic to central nervous system (CNS). The substance may be toxic to kidneys‚ the reproductive system‚ liver‚ skin. Repeated or prolonged exposure to the substance can produce target organs damage. . aniline Hazardous in case of skin contact (irritant‚ permeator)‚ of eye contact (irritant)‚ of ingestion‚ of inhalation. Severe overexposure can result in death. Slightly hazardous in case of skin contact (sensitizer). The substance may be toxic to blood
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HNO2 Chemical Structure: pH: 6.70 Classification: Weak acid Uses: Nitrous acid is useful for destroying sodium azide solutions‚ which are toxic and potentially explosive. It can also be used to prepare diazonium salts‚ which combine with anilines and phenols to form brightly colored azo compounds.
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properties. To obtain such a pure compound‚ the compound we want must be separated from its other natural components‚ which can be done by manipulating physical and chemical properties. Panacetin contains sucrose‚ aspirin and an unknown which can be acetanilide or phenacetin in which phenacetin was created and weighed. Introduction In this lab our basic goal was to make the sucrose‚ aspirin and unknown that are formed from pharmaceutical panacetin. In doing this lab we used NaOH and diethyl either‚ along
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UNIVERSITY OF SAN CARLOS DEPARTMENT OF CHEMISTRY NAME: Maniwang‚ Ma. Aiza C. DATE: March 21‚ 2011 COURSE: BS Chemistry II APPROVED: ___________ PREPARATION OF AZO DYES ABSTRACT In this experiment‚ the azo dyes p-nitrobenzene azoresorcinol and methyl orange were prepared by the azo coupling reaction. The p-nitrobenzene azoresorcinol dye was prepared from p-nitroaniline and resorcinol. The diazonium salt formed was from the reaction of the cold solution of dissolved p-nitroaniline
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CHEMISTRY (Theory) Time allowed : 3 hours General Instructions: (i) All questions are compulsory. Maximum Marks : 70 (ii) Marks for each question are indicated against it. (iii) Question numbers 1 to 8 are very short-answer questions and carry 1 mark each. (iv) Question numbers 9 to 18 are short-answer questions and carry 2 marks each. (v) Question numbers 19 to 27 are also short-answer questions and carry 3 marks each. (vi) Question numbers 28 to 30 are long-answer questions and carry 5 marks
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The objective of this lab was to identify an unknown compound by determining the melting point range using fast and slow ramps. Also‚ to determine the eutectic point of Urea and Cinnamic Acid. An unknown compound that was numbered 8 was chosen. A small amount of the unknown compound was placed in a weighing paper using a spatula. The weighing paper was folded in half twice and then was grinded using a spatula. After the unknown compound was grinded about 1-2mm was added into a capillary tube. A
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Separating The Components of “Panacetin” Observations Most natural products and many commercial preparations are mixtures containing a number of different substances. To obtain a pure compound from such a mixture‚ you must separate the desired compound from the other components of the mixture by taking advantage of differences in their physical and chemical properties. Acidic or basic substances are often converted to water-soluble salts‚ which can then be separated from the water-insoluble
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Neurobiology One can argue that there are aspects of narcissism which can be construed as healthy and advantageous‚ while other aspects can be construed as unhealthy and damaging to the narcissist and the people in whom they interact. Krusemark (2012) underscored the point that those who exhibit heightened narcissistic traits generally exhibit high degrees of extraversion‚ reward focus‚ and approach motivation (taking action to bring something positive into one’s life). These skills are essential
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