Fe(s) + Mn2+(aq) Fe2+(aq) + Mn(s) Yes this reaction is spontaneous in the reverse direction This is because E of the whole rection will be +ve in the reverse direction We know that if E of the reaction is +ve, the reaction is Spontaneous Solution Fe(s) + Mn2+(aq) Fe2+(aq) + Mn(s) Yes this reaction is spontaneous in the reverse direction This is because E of the whole rection will be +ve in the reverse direction We know that if E of the reaction is +ve, the reaction is Spontaneous.