Consider the endothermic reaction: n2 (g) 2 h2 (g) → n2h4 (l) the entropy change of this reaction is and the enthalpy change is so at a very high temperature, this reaction is probably consider the endothermic reaction: n2 (g) 2 h2 (g) → n2h4 (l) the entropy change of this reaction is and the enthalpy change is so at a very high temperature, this reaction is probably unfavorable; unfavorable; nonspontaneous unfavorable; favorable; spontaneous favorable; unfavorable; spontaneous favorable; unfavorable; nonspontaneous unfavorable; unfavorable; spontaneous

unfavourable, unfavourable, non spontaneous

Explanation:

Endothermic reactions are those in which heat is absorbed by the system and exothermic reactions are those in which heat is released by the system.

for Endothermic reaction is positive and   for Exothermic reaction is negative.

Entropy is the measure of randomness or disorder of a system. If a system moves from  an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

For the reaction:

is negative as the randomness decreases when gases convert into liquid.  

For reaction to be spontaneous, and favourable conditions are and

Using Gibbs Helmholtz equation:

Thus the reaction is non spontaneous at all temperatures.