What must be the delta g and delta h ( choose among > , < or =) of the decomposition of an ideal fuel for the control jet of a space vehicle? for controlling a jet vehicle, it is ideal for the fuel to release heat as it is consumed and the process must be spontaneoous.

ΔG < 0 and ΔH < 0

Explanation:

The sign of the  ΔG , determines whether the reaction is Spontaneous or non Spontaneous or at equilibrium ,  

i.e. ,  

if  

Hence ,

as the reaction is spontaneous , the value for ΔG < 0 ,

And , for controlling a jet vehicle , the heat is getting released, ΔH is negative  , i.e. , ΔH < 0