Question

How will the following system react when an increase in pressure occurs? Note: all species are gases. N2O4 <--> 2NO2 Question 9 options:

a. More N2O4 is produced.
b. There is no way to predict how the increase in pressure will affect this system without more information.
c.No change occurs.
d.More NO2 is produced.

Answer 1

a is incorrect just took the test

Answer 2

a. More N2O4 is produced.

As all species are gases, over more pressure, the side of the reaction with fewer gas molecules will be favoured as it is the one that occupies less space, where more molecules would fit in lesser space. N₂O₄ has the same number of atoms of 2NO₂, but the difference is that they are only in one molecule - occupy less space because all the atoms are closer to each other.