ETHERS Classification of Ethers: Symmetrical ethers – two groups attached to O are identical Ex. CH3CH2OCH2CH3 – diethyl ether Unsymmetrical ethers – two groups attached to O are not identical Ex. CH3CH2OCH3 – ethyl methyl ether Physical Properties of Ethers: Ethers have much lower boiling points compared to alcohols of comparable MWs. BPs of ethers increases with increasing MW. BPs of isomeric ethers increase with increasing alkyl chain length. BPs of ethers are about the
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Synthesis of DEET Abstract: For this experiment m-toluic acid was reacted with thionyl chloride resulting in a nucleophilic acyl substitution which could then be used to create DEET with excess diethyl amine (Figure 1). This was done by adding diethyl amine drop wise using a seperatory funnel which resulted in a gas formation which was controlled with a condenser attached to a gas vacuum. The resulting mixture was then washed to remove excess acids and bases and rotovapped. DEET was synthesized
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Response to “The Human Cost of an illiterate society” 1/30/2011 In “The Human cost of an illiterate society‚” Jonathan Kozol attempts to convince his reader that illiteracy is extremely harmful to a society‚ and that it is the ultimate destruction of a human being’s life. He explains with great detail how being ignorant
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“When right of education is denounced” Education is a universal‚ fundamental human right‚ recognized by the Universal Declaration of Human Rights‚ and reaffirmed in international human rights conventions. In this era of technology‚ advancement and globalization‚ education is the key to success and peace. Education is considered as the cheapest defense of a nation. But the worst condition of education in Pakistan reflects the fact that it is unable to defend its own sector. Though 62 years have
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The prescribed procedure produced nylon. The initial indication that nylon was being formed was through the combination of 0.02M of sebacoyl chloride in hexane and 0.05 M 1‚6 hexanediamine. Due to the fact there was an evident product formed after the combination of these two solutions‚ this simply shows that nylon was produced. The prescribed procedure produced nylon due to the fact that there was a present product of the reaction within the IR spectrum. The main peaks of frequency for the unknown
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1 CHM 1321 Second Midterm Apr 1 – 2011 (Prof. S. Gambarotta) Your Name: ___________________ Student #: ______________ Exercise key Exercise key 1
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Illiteracy‚ A Problem Facing Women I was quite amazed as I researched the topic of illiteracy in America. What exactly is illiteracy? Illiteracy is defined in the Webster’s dictionary as: 1) not educated; especially‚ not knowing how to read or write. 2) showing a lack of education --noun. a person who does not know how to read or write -- illiteracy. May-be someone can read just a little‚ some can make out the sounds of a word and some just cannot read at all. Illiteracy is a "loss" to those
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1 Haloalkanes and Haloarenes IIT-JEE Chemistry Siddhivinayaka Educational Academy Rajendra Nagar Chowk Link Road Bilaspur Ph-07752- 237799/238799 Website : www.bajpaigroup.com. e-mail - info@bajpaigroup.com CHAPTER 23 LEARNINg OBJECTIvES (i) Name haloalkanes and haloarenes according to the IUPAC system of nomenclature from their given structures. (ii) Describe the reactions involved in the preparation of haloalkanes and haloarenes and understand various reactions that they undergo.
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SONUBHAU BASWANT COLLEGE OF ARTS‚ COMMERCE & BSc.IT. µCERTIFICATEµ This is certify that‚ ‘GROUP’ has completed the report entitled “LIBRARY MANAGEMENT SYSTEM” As a part of their partial fulfillment for the subject “presentation & communication technique” of Second year B.Sc.IT during academic year 2009 – 2010. Group members are as follows. HEAD OF DEPT. PRINCIPAL PROFESSOR ACKNOWLEDGEME NT The enduring pages of the work are the cumulative sequence of extensive guidance and arduous work. I
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Introduction Friedel-Crafts acylation of anisole with acetic anhydride was used in this experiement to synthesize 4-methoxyacetophenone with the use of a reflux apparatus. Friedel-Crafts reactions can be done by alkylation‚ which involves mixing an alkyl or acyl halide with a Lewis acid‚ or acylation‚ which is done with acid chlorides or anhydrides(Lefevre). Acylation was used because it does not have as many disadvantages aklyations reactions have such as polyalkylation‚ second electrophilic attacks
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