2013 “Reaction Classes and Pericyclic Reactions” ● 4 Lectures ● Recommended Texts: (i) J. March “Advanced Organic Chemistry”‚ p 839‚ `---Edn.‚ Oxford (W); Warren (2) Ch 34‚ 35. Syllabus 1) General principles (a) Reaction classes (i) Heterolytic (ii) Homolytic (iii) Pericyclic (b) Pericyclic Reaction Types 2) Electrocyclic Reactions (a) Definition and examples (b) Stereochemical aspects and the Woodward and Hoffmann rules 3) Cycloaddition Reactions (a) Definition
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Friendship in The Color Purple Everyone is affected by certain events or individuals that greatly change your life. Friendship is a unique loyalty to one another‚ it has love and love is a sacrifice. In the powerful historical fiction novel The Color Purple‚ two sisters get separated but they pray to be reunited. Along the way both girl’s; Nettie and Celie go through tragedies that only God knows but Nettie shares with Celie in letters the rough and good times she goes through. The author Alice
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equilibrium will be examines in the reaction beteween the iron (III) ion and the thiocyanate ion: Fe3+ (aq) + SCN- (aq) ------ FeSCN2+ (aq) The FeSCN2+ complex ion has a blood red color while the iron and the thiocyanate ion are colorless. Therefore‚ the shift in the reaction can followed by noting a change in the intensity of the clood red color‚ which indicates a change in the concentration of the complex ion FeSCN2+. If the reaction shifts to the right‚ the blood red color will get darker because there
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Chapter 1 Chemical Reactions and Equations Q.1. Why should magnesium ribbon be cleaned before burning in air ? Ans: Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Q.2. Write the balanced
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Abstract: This thesis examines Deepa Mehta’s trilogy—Water‚ Earth‚ Fire—and the trilogy’s exploration and contestation of colonial‚ anti-colonial nationalist‚ and religious ideologies as intersecting with patriarchal norms to enact symbolic and actual violence on the bodies of women. I argue that Mehta’s trilogy foregrounds the ways in which patriarchal nationalism legitimizes violence against women’s bodies and sexualities through different social and cultural practices and discourses which are
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how earth is preparing for the winter (Короткая‚ но дивная пора) ‚ but he also described autumn as beautiful period (Весь день стоит как бы хрустальный‚ и лучезарны вечера) 3.A. Apukhtin The same line as the Pushkin’s mapping is in the yellow color of the falling leafs. Long evenings‚ dull mood‚ drying grass and rain. There is no something optimistic‚ only melancholy. 4.E. Bargrizky Author pays more attention to the people’s living while the autumn is going. Autumn is time for harvest and
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LadarreunTaylor English 131 FEB 25 The Color Purple The Color Purple’ is the reverberation of the slavery time. The African-American thinker and writer Gloria Watkins points out that ‘The Color Purple’ is a imitation of the custom of the ‘slave narrative’ Sections written by male and female former slaves about their skills under slavery. Some slave narratives were collected among previous slaves in the 1930s by the Works Progress Direction‚
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English ISU: "Pride and Prejudice" and "The Color Purple" The novels "Pride and Prejudice" and "The Color Purple" both focus on the status of women‚ how they overcome stereotypes to accomplish their dreams and male dominance in societies. The language‚ which is unique in the texts‚ both define the author purpose‚ creating a long lasting effect on readers. The novels give images of strong values and cultural beliefs in society about women‚ many of which still occur. The works also endure because
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BIOL2220 Lab 3: Hill Reaction Introduction In 1937‚ Robert Hill discovered that isolated chloroplasts can generate oxygen when they are illuminated in the presence of a suitable electron acceptor‚ even in the absence of carbon dioxide. This finding was a landmark in the study of photosynthesis because it established that the source of the electrons used in the light reactions is water. It also confirmed that the released oxygen is derived from water instead of carbon dioxide. In chloroplasts
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Properties and Reactions of Hydrocarbons Abstract Introduction Hydrocarbons are organic materials that contain only carbon and hydrogen atoms‚ these molecules can be saturated or unsaturated and acyclic‚ cyclic‚ or aromatic. In this experiment we used a variety of methods to examine the physical and chemical properties of hydrocarbons. The first experiment we tested a variety of solvents to see if they dissolved our alkane (Decalin). One would expect that non-polar solvents will dissolve
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