TheTik Posted November 6, 2005 Share Posted November 6, 2005 ok im having problems with this one question out of my 50. here it is A 1.254g sample of an organic compund that contains only carbon, hydrogen and oxygen reacts with a stream of clorine gas (Cl2). After the reaction 4.730g of HCl and 9.977g of CCl4 are obtained. Determine the empirical formula of the compund. anything will help and thanks in advance thetik Link to comment Share on other sites More sharing options...
akcapr Posted November 6, 2005 Share Posted November 6, 2005 as a hint, figure out how much of the organic compound and Cl2 would be needed to make the products- how much, O, C, H, and CL. Link to comment Share on other sites More sharing options...
woelen Posted November 6, 2005 Share Posted November 6, 2005 ok im having problems with this one question out of my 50. here it is anything will help and thanks in advance thetik This problem cannot be solved with this information. Where does the oxygen remain? Is the oxygen removed as water (H2O). With these reactions, however, the oxygen also could be carried over as COCl2 (phosgene), which is a very common oxidation product when an oxygen-containing haydrocarbon is broken down in a stream of chlorine. Link to comment Share on other sites More sharing options...
RyanJ Posted November 6, 2005 Share Posted November 6, 2005 This problem cannot be solved with this information. Where does the oxygen remain? Is the oxygen removed as water (H2O). With these reactions, however, the oxygen also could be carried over as COCl2 (phosgene), which is a very common oxidation product when an oxygen-containing haydrocarbon is broken down in a stream of chlorine. Thats a bad question if it cannot be answered... I'm shure they arn't allowed to ask trick questions like that. Cheers, Ryan Jones Link to comment Share on other sites More sharing options...
woelen Posted November 6, 2005 Share Posted November 6, 2005 Thats a bad question if it cannot be answered... I'm shure they arn't allowed to ask trick questions like that. Cheers' date=' Ryan Jones[/quote'] I think that the OP has left out some important information when asking this question here . Btw, the oxygen also could be carried over as CO2, yet another possible variation. Link to comment Share on other sites More sharing options...
RyanJ Posted November 6, 2005 Share Posted November 6, 2005 I think that the OP has left out some important information when asking this question here . Btw, the oxygen also could be carried over as CO2, yet another possible variation. So the question can only be answered if the Oxygen product is included... I suppose you need those for the equations from which you derive the ratios right? Cheers, Ryan Jones Link to comment Share on other sites More sharing options...
Skye Posted November 6, 2005 Share Posted November 6, 2005 It may be that no oxygen is present in the original compound. Link to comment Share on other sites More sharing options...
RyanJ Posted November 6, 2005 Share Posted November 6, 2005 It may be that no oxygen is present in the original compound. The question specifically said there was: A 1.254g sample of an organic compund that contains only carbon, hydrogen and oxygen reacts with a stream of clorine gas (Cl2). After the reaction 4.730g of HCl and 9.977g of CCl4 are obtained. Determine the empirical formula of the compund. Cheers, Ryan Jones Link to comment Share on other sites More sharing options...
woelen Posted November 6, 2005 Share Posted November 6, 2005 So the question can only be answered if the Oxygen product is included... I suppose you need those for the equations from which you derive the ratios right? Cheers' date=' Ryan Jones[/quote'] Ryan, you're right. I derive a set of linear equations for each of the three elements and solving these gives the solution to this problem. Without info on the oxygen compound formed, I have more unknowns than equations and I cannot find a solution. Link to comment Share on other sites More sharing options...
RyanJ Posted November 6, 2005 Share Posted November 6, 2005 Ryan, you're right. I derive a set of linear equations for each of the three elements and solving these gives the solution to this problem. Without info on the oxygen compound formed, I have more unknowns than equations and I cannot find a solution. Its like having a puzzle with one of the pieces missing. I suppose there could be loads of possible resultant compounds but wihtout the exact one the odds of finding the correct one are well... not good Cheers, Ryan Jones Link to comment Share on other sites More sharing options...
TheTik Posted November 6, 2005 Author Share Posted November 6, 2005 the funny thing is this is all i got in the textbook... so there is no possible answer without any info on the oxygen? thx for the help, im gonna kill my teacher now:-) cheers Thetik Link to comment Share on other sites More sharing options...
RyanJ Posted November 6, 2005 Share Posted November 6, 2005 the funny thing is this is all i got in the textbook... so there is no possible answer without any info on the oxygen? thx for the help' date=' im gonna kill my teacher now:-) cheers Thetik[/quote'] Nope - you'd have to guess what the oxygen product would be and that would probably be wrong without knowing exactly what it was so the results would then be wrong Cheers, Ryan Jones Link to comment Share on other sites More sharing options...
Skye Posted November 6, 2005 Share Posted November 6, 2005 Ryan, I thought whoever wrote might have accidentally included oxygen, rather than accidentally leaving out the oxygen containing product. But no, it doesn't work out if you do the sums. Link to comment Share on other sites More sharing options...
RyanJ Posted November 6, 2005 Share Posted November 6, 2005 Ryan, I thought whoever wrote might have accidentally included oxygen, rather than accidentally leaving out the oxygen containing product Ah right - my appology Cheers, Ryan Jones Link to comment Share on other sites More sharing options...
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