Final answer:
The two factors that determine whether a reaction will occur spontaneously in the cell are the sign of the change in Gibbs free energy (ΔG) and the sign of the cell potential (Ecell).
Step-by-step explanation:
The two factors that determine whether a reaction will occur spontaneously in the cell are the sign of the change in Gibbs free energy (ΔG) and the sign of the cell potential (Ecell).
If ΔG is negative, it means the reaction is exergonic and will occur spontaneously. If Ecell is positive, it means the reaction is spontaneous and will occur as written. If either ΔG or Ecell is positive, it means the reaction is nonspontaneous and will not occur under standard conditions.