which affect the rate of reactions and discuss the uses of kinetic studies. Outlines: (I) Factors affecting the Rate of Reaction (a) temperature ---- collision of molecules with different velocities and kinetic energies ---- Collision Theory and Maxwell-Boltzmann distribution ---- Arrhenius equation and Activation energy (b) concentration ---- frequency of collisions and effective collisions (c) pressure ---- for reaction involving gases only
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Experiment 11: Reactivities of Some Alkyl Halides in Substitution Reactions Materials & Methods: Materials used: 1-bromobutane 1-chlorobutane bromocyclopentane Bromocylcohexane 2-chlorobutane 2-bromobutane 2-chloro2-metylpropane 2-bromo-2-methylpropane Crotyl chloride Bromobenzene Benzyl chloride 1-chloroadamantene Methods/Techniques: Physiochemical Research: Reagent | Formula Weight | Density | Boiling Point | Melting Point | Color | 1-bromobutane | 137.023 g/mol |
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Week 10: Oxidation and Reduction Reactions: The Reactions of Copper Data: Part I: Preparing a solution of copper (II) nitrate Initial mass of copper wire: .520g Mass of copper wire after vigorously scouring: .518g Observations of Copper (II) ribbon mixed with HNO3: Solution turned green. Thick brown gas formed. Copper (II) bubbled vigorously. Cu (II) dissolved‚ solution appeared green/blue. After the addition of H2O a blue crusty precipitate formed. Part II: Synthesis of solid copper
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gives a white precipitate with alcoholic silver nitrate (Q.2) Dry ether The reaction RX + 2Na + RX _______________? R-R + 2NaXis called. ( 1 mark ) (a) Sandmeyer’ reaction (b) Fittig reaction (c) Wurtz reaction (d) Williamson’s synthesis (Q.3) Substitution of chlorine takes place readily at higher temperature in : ( 1 mark ) (a) CH3CH=CH2 (b) H2C=CH2 (c) HC C (d) None of the above (Q.4) (CH3)3CMgBr on reaction with D2O gives: ( 1 mark ) (a) (CH3)3CD (b) (CH3)3COD (c) (CD3)3CD (d) (CD3)3OD
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Isolation of Recombinant Taq Polymerase for PCR Isolation of Recombinant Escherichia coli IPTG induced Taq polymerase and characterization through polymerase chain reactions‚ Western Blotting and gel electrophoresis * Braeden Cowbrough1‚ Michael Atkins2‚ Christopher Bonner3 From the Faculty of Biochemistry Lab 3006 B Carleton University‚ Ottawa‚ ON K1S 5B6 *Running title: Isolation of Recombinant Taq Polymerase for PCR To whom correspondence should be addressed: Braeden Cowbrough‚ Faculty of Biochemistry
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applies to this reaction (SN2‚ E2 etc)? E1 3. Why was acid employed in this reaction? The acid was used to protonate the leaving group (OH) to form water which is a much better leaving group than OH. 4. What role does the aromatic ring play in both intermediate and product formation? The aromatic ring is also benzyllic which helps us steer the reaction in the E1 pathway we are trying to achieve. It also forms a very stable carbocation which is essential for an E1 reaction to occur. The ring
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Syllabus Broadly divided into 2 parts: 1) Pericyclic Reactions i) Electrocyclic ii) Cycloaddition and cycloreversion iii) Sigmatropic 2) Rearrangements i) Ring expansion ii) Carbocation rearrangements iii) Pinacol‚ dienone-phenol‚ benzilic acid‚ Favorskii‚ etc. 3 CA - Quiz Quiz 1 (week 7‚ 1 hour) – Revision of fundamental organic chemistry – Sigmatropic‚ electrocyclic‚ everything up to week 6. Quiz 2 (week 11‚ 1 hour) – Pericyclic reactions and rearrangements 4 Revision Important topics
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MARKS: 150 TIME: 3 hours This question paper consists of 16 pages and 4 data sheets. INSTRUCTIONS AND INFORMATION |1. |Write your centre number and examination number in the appropriate spaces on the ANSWER BOOK. | | | | | | | | | |Answer ALL the questions
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pages © International Baccalaureate Organization 2010 0113 –2– N10/4/CHEMI/SP2/ENG/TZ0/XX SECTION A Answer all the questions in the spaces provided. 1. The data below are from an experiment to measure the enthalpy change for the reaction of aqueous copper(II) sulfate‚ CuSO4 (aq) and zinc‚ Zn (s). Cu 2+(aq ) + Zn (s) → Cu (s) + Zn 2+(aq ) 50.0 cm3 of 1.00 mol dm–3 copper(II) sulfate solution was placed in a polystyrene cup and zinc powder was added after 100 seconds. The temperature-time
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questions and carry 5 marks each. (vii) Use Log Tables‚ if necessary‚ Use of calculators is not allowed. QUESTION PAPER CODE 56/1/1 1. 2. 3. 4. 5. 6. Write a feature which will distinguish a metallic solid from an ionic solid. Define ‘order of a reaction’. What is an emulsion? Why does NO2 dimerise ? Give an example of linkage isomerism. A solution of KOH hydrolyses CH3CHClCH2CH3 and CH3CH2CH2CH2Cl. Which one of these is more easily hydrolysed? Draw the structural formula of I-phenylpropan-l-one
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