(1) Melting points of pure 2- and 4-bromonitrobenzene are 41 (1) Melting points
ID: 820821 • Letter: #
Question
(1) Melting points of pure 2- and 4-bromonitrobenzene are 41 (1) Melting points of pure 2- and 4-bromonitrobenzene are 41 (1) Melting points of pure 2- and 4-bromonitrobenzene are 41 Melting points of pure 2- and 4-bromonitrobenzene are 41 degree C and 125 degree C, respectively. If purification by crystallization does not provide complete separation of the two products and you end up with a mixture, how would that affect the melting point? the mixture would have the same melting point as the low-melting isomer, i.e. 41 degree C the mixture would have the same melting point as the high-melting isomer, i.e. 125 degree C the melting point would be either 41 or 125 degree C, depending on whichever isomer's crystal ends up in the melting capillary tube. we would observe a melting point depression we wouldn't be able to measure the melting point in this case In Nitration of Bromobenzene experiment, the HPLC is used: to find out how many different isomers of the product are obtained to determine the ratio of isomers to check the purity of the product all of the above In the reaction below, what is the yield of 1-bromo-4-nitrobenzene? In the reaction below, what is the limiting reagent?Explanation / Answer
1. (D)
2. (D)
3 (C) References : http://www.asso-etud.unige.ch/aecb/rapports/2eme/chiorg/p28pbromonitrobenzene_pacho.pdf
4.( A) References http://answers.yahoo.com/question/index?qid=20080201102120AA7SNp9
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.