1. Use a table of standard thermodynamic values to predict the standard cell potential at 90 C: Cu(s)|CuSO4||AgNO3|Ag(s)

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1. Use a table of standard thermodynamic values to predict
the standard cell potential at 90 C:
Cu(s)|CuSO4||AgNO3|Ag(s)
Assume that the values of ΔH and ΔS are independent of
temperature.
2. Someday, cars may be powered by clean
H2/O2 fuel cells and electric motors.
Under standard conditions, such a fuel cell can develop 1.229
volts. If the oxygen is obtained from air (at P=0.21 bar), what
pressure of H2 would be required to develop 1.254
volts from the cell at 25 C?
3. Consider a fuel cell that works by reacting 31.1 g of
liquid methanol with oxygen to form liquid water and
CO2(g) at constant pressure. Compute the maximum amount
of electrical work that can be performed by the fuel cell under
standard conditions at 25 C. Express your answer as a positive
number.