Question

what happens at the molecular level when the following reaction occurs?

N2O4(g)>2NO2(g)

What change in entropy and enthalpy occur for this reaction?

- Both entropy and enthalpy will increase

-Entropy will increase, but enthalpy will decrease

-Entropy will decrease, but enthalpy will increase

-Both entropy and enthalpy will decrease Explain

Answer 1

As one molecule dissociated into two molecules and therefore, entropy increases because entropy depends on number of particles, higher the number of particle, higher will be entropy.

As it is a dissociation reaction and hence energy is needed for such reaction and thus it is an endothermic reaction and hence enthalpy is positive.

Thus, both entropy and enthalpy increases