http://www.pcb7.com/what-is-the-exact-empirical-chemical-formula-of-the-specific-compound-designated-as-pcb.html All about PCB Fri, 30 Jul 2010 04:37:10 +0000 http://wordpress.org/?v=2.7.1 hourly 1 http://www.pcb7.com/what-is-the-exact-empirical-chemical-formula-of-the-specific-compound-designated-as-pcb.html/comment-page-1#comment-192 skipper Mon, 29 Jun 2009 00:27:06 +0000 http://www.pcb7.com/what-is-the-exact-empirical-chemical-formula-of-the-specific-compound-designated-as-pcb.html#comment-192 C12HxCl(10-x) There is no exact formula; the H and Cl subscripts can range from between 0 and 10, where the sum of both does not exceed 10, and H is never higher than 8. C12HxCl(10-x)
There is no exact formula; the H and Cl subscripts can range from between 0 and 10, where the sum of both does not exceed 10, and H is never higher than 8.

]]> http://www.pcb7.com/what-is-the-exact-empirical-chemical-formula-of-the-specific-compound-designated-as-pcb.html/comment-page-1#comment-191 science teacher Sun, 28 Jun 2009 23:57:24 +0000 http://www.pcb7.com/what-is-the-exact-empirical-chemical-formula-of-the-specific-compound-designated-as-pcb.html#comment-191 PCB refers to a class of compounds (not a specific compound) that are called PolyChlorinated Biphenyls. Biphenyl is 2 benzene rings joined together. The molecular formula for biphenyl is C12H10. In PCBs, Hydrogen atoms are replaced by Chlorine atoms so the general formula would be C12H(10-x)Clx, where 'x' = the number of chlorine atoms. For example, if 4 chlorine atoms replaced 4 hydrogen atoms, the formula would be C12H6Cl4. Since an empirical formula is the simple whole number ratio of atoms in a formula, the empirical formula in this case would be C6H3Cl2 and the molecular formula would be C12H6Cl4. PCB refers to a class of compounds (not a specific compound) that are called PolyChlorinated Biphenyls.
Biphenyl is 2 benzene rings joined together. The molecular formula for biphenyl is C12H10. In PCBs, Hydrogen atoms are replaced by Chlorine atoms so the general formula would be C12H(10-x)Clx, where ‘x’ = the number of chlorine atoms. For example, if 4 chlorine atoms replaced 4 hydrogen atoms, the formula would be C12H6Cl4.
Since an empirical formula is the simple whole number ratio of atoms in a formula, the empirical formula in this case would be C6H3Cl2 and the molecular formula would be C12H6Cl4.

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