This preview shows page 1. Sign up to view the full content.
Unformatted text preview: M) ||
Cu(NO3)2(0.10M) | Cu(s), put all the terms together that enter into the equation for Eocell
and enter the value you calculate for it.
Part I Analysis. Using the equation Eocell = Eocathode - Eoanode, and the reference value of Eo
for Cu(II)/Cu(s) for the role that copper plays in this overall cell reaction, determine the
value of the standard potential for the half-reaction Fe3+(aq) + e- Fe2+(aq) and enter it
here. 19 Part II.
1. Write the chemical reaction in the spontaneous direction for the copper concentration
cells--the first cell you examined in Part II of the experiment. Calculate the
theoretical value of the potentials for these copper concentration cells using the
Nernst equation. Compare the measured and theoretical values for these cell
potentials. Your agreement will be only semi-quantitative.
2. Altogether, you have measured the voltages of three cells with different relative
concentrations of Fe2+ and Fe3+ ions against a common Cu2+/Cu reference electrode.
If you write out the Nernst equation for t...
View Full Document
- Spring '07