For the cell, Zn(s) | Zn2+| | Cu2+| Cu(s), the standard cell voltage,is 1.10 V. When a cell using these reagents was pre

Question

For the cell, Zn(s) | Zn2+ | | Cu2+ | Cu(s), the standard cell voltage, is 1.10 V. When a cell using these reagents was prepared in the lab, the measured cell voltage was 0.98 V. One possible explanation for the observed voltage is :

Answer

Option 1 there were 2.00 mol of Cu2+ but only 1.00 mol of Zn2+

Option 2 the Zn electrode had twice the surface of the Cu electrode

Option 3 the [Zn2+] was larger than the [Cu2+]

Option 4 the volume of the Zn2+ solution was larger than the volume of the Cu2+ solution.