Which of the following statements is true concerning the electrochemical cell depicted below? Ca | Ca2+(aq) || Mn2+(aq) | Mn Ca₂⁺(aq) + 2e^– → Ca(s); ℰ° = –2.87 V Mn2+(aq) + 2e– Mn(s); ℰ° = –1.19 V
a) The cell reaction is spontaneous with a standard cell potential of 1.68 V.
b) The cell reaction is spontaneous with a standard cell potential of 4.06 V.
c) The cell reaction is nonspontaneous with a standard cell potential of –1.68 V.
d) The cell reaction is nonspontaneous with a standard cell potential of –4.06 V.
e) The cell is at equilibrium.