Question

In the reversible reaction: 2NO2 (g) ⇌ N2O4 (g) the formation of dinitrogen tetroxide releases heat, and the formation of nitrogen dioxide absorbs heat. If the reaction is at equilibrium and the temperature decreases, what will the effect be?
A. The equilibrium will shift so that there is more nitrogen dioxide.

B. Dinitrogen tetroxide releases heat and changes from gas to liquid.

C. Nitrogen dioxide releases heat and changes from gas to liquid.

D. The equilibrium will shift so that there is more dinitrogen tetroxide.

Answer 1

Answer:

The equilibrium will shift so that there is more dinitrogen tetroxide.

Explanation:

Answer for Educere/ Founder's Education

Answer 2

Answer:

D

Explanation:

Any change of temperature will subsequent in a change of the equilibrium position. With reference to Le Chaterlier's principle, this equilibrium shift will occur in a manner as to neutralize the change that the system has undergone.

In this case, the temperature is seen to have decreased. To neutralize this effect, the equilibrium position will shift in a manner as to increase the temperature back to its previous state.

This equilibrium shift will occur by favoring the reaction the reaction which results in the release of heat -which is the formation of dinitrogen tetrahydroxide.

This will result in the presence of more dinitrogren tetrahydroxide relative to the amount of nitrogen dioxide in the system.

Hope this helps