Answer Happy

1. For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g).
E∘=0.483 V what is the cell potential at 25 ∘C if the
concentrations are [Co3+]= 3.00×10−2 M , [Co2+]= 0.675 M , and
[Cl−]= 0.862 M , and the pressure of Cl2 is PCl2= 4.60 atm ?
Express your answer with the appropriate units.
2. Consider the reaction: Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at
49 ∘C ,
where [Fe2+]=3.30 M and [Mg2+]= 0.310 M
2a. What is the value for the reaction quotient, Q,
for the cell?
Express your answer numerically.
2b. What is the value for the temperature, T, in
kelvins?
Express your answer to three significant figures and include the
appropriate units.
2c. What is the value for n?
Express your answer as an integer and include the appropriate
units (i.e. enter mol for moles).
2d. Calculate the standard cell potential at 25 ∘C for
Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s)
Express your answer to three significant figures and include the
appropriate units.