Two galvanic cells, A and B

CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

Two galvanic cells, A and B, are based on the reaction

\mathrm{Cu^{2+}(aq)+Zn(s)\rightarrow Cu(s)+Zn^{2+}(aq)}

. At

298\,\text{K}

the initial concentrations are Cell A:

[\mathrm{Zn^{2+}}]=1.0\,\text{M}

and

[\mathrm{Cu^{2+}}]=0.010\,\text{M}

Cell B:

[\mathrm{Zn^{2+}}]=0.010\,\text{M}

and

[\mathrm{Cu^{2+}}]=1.0\,\text{M}

Which statement correctly compares the magnitudes of the instantaneous cell potentials,

|E_A|

and

|E_B|

? (a)

|E_A|>|E_B|

(b)

|E_B|>|E_A|

(c)

|E_A|=|E_B|

(d) The relationship cannot be determined without additional temperature data.