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Synthesis of di & tri substituted benzenes (symmetrical tribromo benzene, 2-amino-5-methyl phenol, 3-nitro-4-bromobenzoic acid, 3,4- dibromonitro benzene, 1,2,3- trimethyl benzene)
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The sample assignment was about the synthesis of tri-substituted benzene. The introduction of one substituent (electrophile or nucleophile) in the benzene ring is very simple which just need the reaction condition. But it is very tricky to introduce three substituents (electrophile or nucleophile) in the benzene ring, because it need deep understanding about the nature and the effect of already present substituent. The substituents can be divided into two main groups, one is electron withdrawing group while the other is electron donating group. The electron withdrawing group direct the incoming electrophile toward Meta position (1-3) while electron donating group direct the incoming electrophile toward Ortho (1-2) or Para (1-4) position.
a sample of oxygen is collected in a 206 ml container over water at 15c and the barometer reads 793 torr. what volume
A nuclear power plant operating at 40.0% efficiency produces 1122 MW of usable power in 1.00 year and consumes 1.15×106 g of uranium-235. What is the energy in joules released by the fission of a single uranium-235 atom
an automobile gasoline tank holds 22 kg of gasoline. when the gasoline burns 83 kg of oxygen is consumed and carbon
the oxygen gas emitted from an aquatic plant during photosynthesis is collected over water at a temperature of 25 and a
suppose 5.0 mol of antimony iiifluoride is added to 10.0 mil of carbon tetrachloride. how many grams ccl2f2 and sbcl3
A 0.146 g sample of an unknown monoprotic acid (molar mass = 83.0 g/mol) was dissolved in 50.0 mL of water and titrated with a 0.101 M NaOH solution. After the addition of 14.0 mL of base, the pH was 5.12. What was the Ka for the unknown acid
An atomic absorption method for the determination of the amount of iron present in used jet engine oil was found, from pooling 30triplicate analyses, to have a standard deviation s=2.4 µgFe/mL. Calculate the 80% and 95% confidence limits for the r..
How rapidly would each of the following particles be moving if they all had the same wavelength as a photon of red light (wavelength = 750 nm)
Calculate the heat evolved when 231 g of white phosphorus (P4) burns in air according to the equation below.
A powder contains FeSO4·7H2O (molar mass = 278.01 g/mol) among other components. A 3.585-g sample of the powder was dissolved in HNO3 and heated to convert all iron to Fe3
What kind of information would allow you to determine how successful the policy has been?
One of the side effects of taking non-steroidal anti-inflammatories like aspirin and ibuprofen is a degradation of the integrity of the stomach lining.
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