Final answer:
Once Ek = -62 mV, the potential increases by 62 mV and the reaction is spontaneous.
Step-by-step explanation:
Once Ek = -62 mV, the change in potential is -(-62)mV = +62 mV.
This indicates that the potential has increased by 62 mV.
In the context of the previous example, a positive change in potential suggests that the system is moving towards a more stable state and the reaction is spontaneous.