Use the following information to complete this problem A student inserts a strip
ID: 976742 • Letter: U
Question
Use the following information to complete this problem A student inserts a strip of magnesium metal into a solution of copper(II)sulfate (CuSO_4) describe what you would expect to observe. If a strip of copper metal is submerged in a solution of magnesium sulfate, describe what you would expect to observe. What is the standard cell potential for a galvanic cell made with Mg/Mg and Cu/Cu^2+ ? For the galvanic cell from part C calculate the maximum electrical work that could be accomplished using [Mg^2+ ]=1.5 M and [Cu^2+ ]=0.30 M.Explanation / Answer
a.
expect Mg to react and oxidize and form Mg+ in aquus oslution, also, the Cu+2 goes to Cu(s)
b.
Expect nothing, there is no spotnanous reactions
c.
the cell potential
E°cell = Ered - Eox = 0.34 - - 2.57 = 2.91 V
d-.
for
Ecell = E°cell - 0.0592/n*log(Q)
Q = [Mg+2]/[Cu+2]
n = 2
Ecell = E°cell - 0.0592/2*log([Mg+2]/[Cu+2])
Ecell = 2.91 -0.0592/2*log(1.5/0.3) = 2.88931 V