What is the charge on potassium (K) when it forms an ion? (1 point) a
1+

b
1−

c
2+

d
2−

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.