Comprehensive thermochemical problem: Consider an electrochemical cell with the following half- cells: Pb2+(aq)(0.01 M)/Pb(s) and Sn2+(aq)(2M)/Sn(s)...

Comprehensive thermochemical problem: Consider an electrochemical cell with the following half- cells: Pb2+(aq)(0.01 M)/Pb(s) and Sn2+(aq)(2M)/Sn(s) at 25 °C.

a. Find the potential of the cell.

b.Determine the oxidizing agent and reducing agent.

c. Calculate the standard free energy change for the reaction.
d. Find the free energy change for the cell under the current conditions.
e. Determine the equilibrium concentrations of the solutions.
f. Use ΔH°f data to determine ΔH°rxn. ΔH°f (Sn2+ (aq)) = -8.8 kJ/mol ΔH°f (Pb2+ (aq)) = 1.6 kJ/mol

g. Calculate K at 50 °C.

h. Determine the equilibrium concentrations at 50 °C.
i. Calculate the standard change in molar entropy for the reaction from values you determined in the previous problems.

Solutions

Expert Solution

Amanda K answered 1 year ago

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