« previous next »
Pages: [1]   Go Down

Author Topic: need explanations on Chemistry cie  (Read 697 times)

Offline 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?
Logged

Offline 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 :P
« Last Edit: May 11, 2010, 11:37:19 am by ima_shah2002 »
Logged

Offline 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! :)
Logged

Offline 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
 ;D ;D ;D
Logged
Pages: [1]   Go Up
« previous next »