Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) Disregarding stereoisomers‚ how many different enols can the β-diketone CH3 COCH 2 COCH 2 CH3 form? A) 3 B) 1 C) 4 D) 0 E) 2 2) Methylamine reacts with acetophenone to yield the: A) imine. B) enamine. C) acetal. D) amide
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DIFFERENT REACTION WILL YIELDS TO A CONCLUSION OF WHAT IS/ARE THE FACTOR/S OF ELECTROPHILIC SUBSTITUTION ON AN ORGANIC COMPOUND – AROMATIC COMPOUNDS. There are three experiments in this chapter of the laboratory. First is the substitution by bromination. Second is the solvent effect which is dealing in the nature of the solvent. And third is the temperature test. Having this division in the experiment one‚ we can now conclude that substituent in substitution‚ the nature of the solvent polar or
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Experiment 1: Bromination of Acetanilide1 Precautions: Ethanol is flammable Sodium hypochlorite is an oxidizing agent and releases toxic fumes (handle in fume hood) Acetic acid is corrosive‚ harmful if inhaled‚ flammable and can cause burns (handle in fume hood) Gloves are recommended to avoid chemical contact with skin Reaction Scheme: Conversion of acetanilide to p-bromoacetanilide Procedure: To a 125 mL Erlenmeyer flask containing a mixture of 95% ethanol (6 mL) and acetic acid (5 mL)‚ dissolve
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Application of linear algebraic equation for chemical engineering problem The chemical engineering system models often outcome of set of linear algebraic equations. These problems may range in complexity from a set of two simultaneous linear algebraic equations to a set involving 1000 or even 10‚000 equations. The solution of a set two or three linear algebraic equations can be obtained easily by the algebraic elimination of variables or by the application of cramer’s rule. However for systems involving
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be very electron deficient and this is the cause of the reactivity of acid anhydrides. The first step involves the nucleophilic acyl substitution reaction of acetic anhydride with aniline to form acetanilide. The reaction is initiated by the donation of the lone pair of electrons on the nitrogen atom on aniline to the electron deficient carbonyl carbon atom in acetic anhydride‚ which is followed by the carbon oxygen double bond breaking in the electron deficient carbon with the oxygen taking
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Lab 1: Alkene Addition: Bromination of (E)-stilbene I. Introduction: 1. The purpose of the experiment was to perform an electrophilic addition reaction by using pyridinium tribromide to brominate (E)-stilbene and to identify whether it formed the meso- or racemic product through melting point analysis. 2. This is the mechanism for the bromination of (E)-stilbene. However‚ this is the mechanism for Br2 and in class we us Pyridinium Tribromide instead due to the difficulties associated
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PICRIC ACID (DIRECT DYE): Take about 60 mL of water in a 400 mL beaker. Add 2-3 drops of concentrated sulphuric acid and about 0.5 g of Picric Acid to it. Stir the solution with a wooden stick and warm over a hot water bath. Immerse one piece of each wool‚ cotton‚ polyester‚ nylon and terecot into it. When the pieces are thoroughly wetted in dye solution remove these with the help of forceps. Wash these with the help of warm water till the washing is colourless. Dry the pieces and note the results
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Hong Kong Diploma of Secondary Education Examination Biology and Combined Science (Biology part) School-based Assessment Sample Tasks Teachers may use the sample tasks for non-profit making educational and research purposes with proper acknowledgement. ©香港考試及評核局 保留版權 2009 Hong Kong Examinations and Assessment Authority All Rights Reserved 2009 HKDSE Biology SBA Practical Task: Topic: I (e) Presence of protease in pineapple and / or kiwifruit Scenario: Last week‚ Mary prepared some jelly
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Discussion: The purpose of this experiment was to isolate the aromatic hydroxyl compound‚ eugenol from crushed cloves using steam distillation. After conducting the distillation‚ the expected two layers were not visible in the centrifuge tube. Subsequently‚ the extraction and evaporation did not produce the expected oil. This result is probably due to the collection of only water vapor during distillation. From another group’s data‚ 3.80% of the oil was recovered from the cloves in which the major
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CLASS 12 textbook http://www.TutorBreeze.com Contact for Online Tutoring in Physics‚ Math‚ Chemistry‚ English (v) Benzene to 4-bromonitrobenzene :- (vi) Benzyl alcohol to 2-phenylethanoic acid :- (vii) Ethanol to propanenitrile :- (viii) Aniline to chlorobenzene :- (ix) 2-Chlorobutane to 3‚ 4-dimethylhexane:- ©TutorBreeze.com Please do not copy the answer given here Write to us for help in understanding the solution NCERT/CBSE CHEMISTRY CLASS 12 textbook http://www.TutorBreeze
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