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![[Post New]](/templates/default/images/icon_minipost_new.gif) 17 Mar 2008 20:16:43 IST
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what is hess law
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17 Mar 2008 20:22:02 IST
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Hess's law is a law of named for expansion of the Hess Cycle and used to predict the enthalpy change and conservation of energy regardless of the path through which it is to be determined.
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18 Mar 2008 13:51:50 IST
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Hess Law states that energy evolved or absorbed in a reaction is always same whether it has been carried out in single step or multiple steps.
i.e, heat evolved in the reaction, (A+B)+C i same as heat evolved in the reaction A+(B+C) is same as the energy evolved in the reaction (A+B+C)
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18 Mar 2008 14:39:47 IST
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this should help u:
http://en.wikipedia.org/wiki/Hess%27s_law
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18 Mar 2008 15:39:08 IST
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Hess law is an algebric way of equating enthalpies of chemical equations just like simple mathematical equations with simple decisive coefficients!!!!
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18 Mar 2008 16:02:49 IST
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hess law states that d net chaneg in enthalpy takin place durin a chemical reaction is independent of d steps betwn d initial n final states of d reactin system ,widout considerin d intermediate steps |
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