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need explanations on Chemistry cie
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Topic: need explanations on Chemistry cie (Read 696 times)
The SMA
Newbie
Posts: 49
Reputation: 73
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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cashem'up
SF Geek
Posts: 371
Reputation: 2069
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
«
Last Edit: May 11, 2010, 11:37:19 am by ima_shah2002
»
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The SMA
Newbie
Posts: 49
Reputation: 73
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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cashem'up
SF Geek
Posts: 371
Reputation: 2069
Re: need explanations on Chemistry cie
«
Reply #3 on:
May 12, 2010, 05:26:43 am »
no probs
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need explanations on Chemistry cie