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Chemistry
Chemistry
Problem
At
298
K
298\,\text{K}
298
K
the standard cell potential for the reaction
M
g
2
+
(
aq
)
+
N
i
(
s
)
→
M
g
(
s
)
+
N
i
2
+
(
aq
)
Mg^{2+}(\text{aq}) + Ni(\text{s}) \to Mg(\text{s}) + Ni^{2+}(\text{aq})
M
g
2
+
(
aq
)
+
N
i
(
s
)
→
M
g
(
s
)
+
N
i
2
+
(
aq
)
is
E
∘
=
+
2.12
V
E^\circ = +2.12\,\text{V}
E
∘
=
+
2.12
V
. The ion concentrations are
[
M
g
2
+
]
=
0.010
M
[Mg^{2+}] = 0.010\,\text{M}
[
M
g
2
+
]
=
0.010
M
and
[
N
i
2
+
]
=
1.0
M
[Ni^{2+}] = 1.0\,\text{M}
[
N
i
2
+
]
=
1.0
M
. Calculate the cell potential
E
E
E
to two significant figures.
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