Which of the following properties would helium have? A. Closely packed and structured particles
B. Fills entire container
C. Definite volume
D. Definite shape
Reset Selection

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.