Question

O ENTROPY AND FREE ENERGY Using reaction free energy to predict equilibrium compo... Consider the following equilibrium: N,0.6) 2NO, () AGO- 5.4 kJ Now suppose a reaction vessel is filled with 9.53 atm of dinitrogen tetroxide (N204) at 247. °C. Answer the following questions about this system: Under these conditions, will the pressure of N, O, tend to rise or fall? fall x I ? lo ves no Is it possible to reverse this tendency by adding NO,? In other words, if you said the pressure of N, O, will tend to rise, can that be changed to a tendency to fall by adding NO, Similarly, if you said the pressure of N, O, wil tend to fall, can that be changed to a tendency to rise by adding NO,? If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO, needed to reverse it. Round your answer to 2 significant digits.

Answer 1

Tet les consider a reaction; N204 (9) --> 2N03(g), Adrs +514KJ The pressure of Naoy tends to ball, > Yes, it is possible to severse thuis tendences by odding Noz - tet is consider, AGO+5:4 kJ T= 247°C+273 = 520K. We know that, AGO = -RT ank +5:42 081314 x10 15 20 enk si4 2-4.323 enk - 11249 - Ink K=e11249 701286 atin K= Pozou (Pros)? 01286 - 9153 (PNO2)² (Pro) - 2010 Sep Poros = 5i77 atm