PLEASE- NOT ME BEING 13 AND DATING A 17YO GANG MEMBER THAT THINKS IM 19 ON THE IMVU GAME:

Oop- how did that happen? And Whats the game

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.