
Chemistry Chemistry Forum 
 LinkBack  Thread Tools  Display Modes 
April 3rd, 2018, 08:37 AM  #1 
Newbie Joined: Apr 2018 From: India Posts: 4 Thanks: 0  why Keq depends on how we write the equation?
For the rxn N2(g) +3H2(g) ⇌ 2NH3(g) Keq1 = ( [NH3]^2 ) / ( [N2] * [H2]^3 ) But for the same rxn, in different form 0.5N2(g) +1.5H2(g) ⇌ NH3(g) Keq2 = ( [NH3] ) / ( [N2]^0.5 * [H2]^1.5 ) Here Keq1 ≠ Keq2 But practically Keq should only depend on Temperature, so why is it affected on changing stoichiometric coefficients? 
April 6th, 2018, 11:38 AM  #2  
Member Joined: Jun 2017 From: Lima, Peru Posts: 48 Thanks: 1 Math Focus: Calculus  Quote:
As it was mentioned in that discussion what in ordinary arithmetic can be held true in practical terms does not. Equilibrium constants depend on the rate of reaction which is determined experimentally and this is the result from its mechanism therefore we cannot imply so easily that a fraction of whatever you're trying to use will held true.  

Tags 
depends, equation, keq, write 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
write equation  MathNewb42  Applied Math  0  March 12th, 2013 06:53 AM 
write as an equation?  vivalajuicy  Linear Algebra  3  November 13th, 2012 06:33 AM 
Write an equation for and solve for x  fish262  Algebra  1  March 13th, 2012 06:10 PM 
how can i write equation  phythagoras1  Applied Math  2  December 24th, 2010 12:54 AM 
write an equation  minhson1989  Algebra  1  September 1st, 2007 05:15 PM 