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Offline The SMA

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need explanations on Chemistry cie
« on: May 11, 2010, 09:57:09 am »
hey guys, what does enthalphy changes of vaporisation means?
n why does its related to indicate the relative strength of
hydrogen bonds between the molecules in liquid Hydrogen halide?
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Offline cashem'up

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Re: need explanations on Chemistry cie
« Reply #1 on: May 11, 2010, 11:34:06 am »
the enthalpy of vaporisation is the energy change required in order to form 1 mole of vaporised products............. now as we know when something vaporises INTERMOLECULAR FORCES ARE BROKEN...... now in  hydrogen halides there is presence of dipole-dipole forces between molecules which are broken during vaporisation and thus if the enthalpy change is more positive then the bonds must have been more stronger......

hope it helps thx :P
« Last Edit: May 11, 2010, 11:37:19 am by ima_shah2002 »
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Offline The SMA

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Re: need explanations on Chemistry cie
« Reply #2 on: May 11, 2010, 11:08:34 pm »
thaaaaanks ima shah
really really appreciate it! :)
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Offline cashem'up

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Re: need explanations on Chemistry cie
« Reply #3 on: May 12, 2010, 05:26:43 am »
no probs
 ;D ;D ;D
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