Question

Given the following cell notation for a voltaic cell

Zn (s)  Zn2+ (0.045 M)  Cr3+ (0.800 M)  Cr (s)

a) Write the balanced half-cell and overall equations.

[3 Marks]

b) Calculate the standard cell potential, Eo cell.

[2 Marks]

c) Determine the cell potential, Ecell.

[3 Marks]

d) If the cell is allowed to operate spontaneously, will Ecell increase, decrease or remain

constant with time? Explain.

[2 Marks]

e) Determine the standard free-energy change (G) and free-energy change (G) of

the cell

Answer 1

If the cell is allowed to operate spontaneously, will Ecell increase, decrease or remain

constant with time? Explain.

e) Determine the standard free-energy change (G) and free-energy change (G) of

the cell