Cyanide Posted March 27, 2007 Share Posted March 27, 2007 I performed a lab dealing with the nitration of bromobenzene.. I'm supposed to calculate the densities of 4-bromobenzene AND 2-bromobenzene. I know the mass of each, and the molecular weight, and the moles...I was wondering where to start..? Density is measured in g/mL .. I just don't see a stoichiometric relation between g/mol, mol, and mass in grams, without having a volume Link to comment Share on other sites More sharing options...
ecoli Posted March 27, 2007 Share Posted March 27, 2007 You should be able to find the densities of the compound at STP, perhaps from the MSDS. From there you can solve for volume. Link to comment Share on other sites More sharing options...
Cyanide Posted March 27, 2007 Author Share Posted March 27, 2007 Muchas Gracias I was just overlooking my results, and for some reason I have more o-bromonitrobenzene than p-bromonitrobenzene... From what I understand, the p-bromonitrobenzene SHOULD be the major product since bromine is an ortho-para director, and would want the least steric hinderance, correct? But perhaps the experimental lab reaction was not correctly completed...I'm not sure how to explain a large Ortho:para ratio. Hm. Could it be due to the fact that bromine is not a large molecule, and only larger molecules will force a the NO2 to the para position? Link to comment Share on other sites More sharing options...
Cyanide Posted March 28, 2007 Author Share Posted March 28, 2007 Nevermind, I'm dumb. LoL. I think I've figured it out Link to comment Share on other sites More sharing options...
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