October 13, 2024, 12:34:09 PM
Forum Rules: Read This Before Posting


Topic: Simple entropy question+spontanous/not  (Read 2892 times)

0 Members and 1 Guest are viewing this topic.

Offline JoachimF

  • New Member
  • **
  • Posts: 5
  • Mole Snacks: +0/-0
Simple entropy question+spontanous/not
« on: December 16, 2008, 02:36:01 PM »
Hi!

Consider the reaction N2 + 2O2  :rarrow: NO2

Just seeing this equation, how would I know whether the entropy is increasing or not?

I was thinking that if it was a spontaneous reaction, then the entropy would be increasing. Though the creation of NO2 requires energy, right?  ??? In such a case entropy would be decreasing...?

I'm lost!

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27809
  • Mole Snacks: +1808/-411
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Simple entropy question+spontanous/not
« Reply #1 on: December 16, 2008, 02:43:36 PM »
Number of molecules.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline JoachimF

  • New Member
  • **
  • Posts: 5
  • Mole Snacks: +0/-0
Re: Simple entropy question+spontanous/not
« Reply #2 on: December 16, 2008, 02:48:37 PM »
Embarrassed  :-[

Thank you, Borek!  ;D

Sponsored Links