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Chemistry
Chemistry
Problem
Consider the cell
H
2
(
Pt
)
∣
H
3
O
+
(
aq
)
∣
Ag
+
∣
Ag
\text{H}_2(\text{Pt})|\text{H}_3\text{O}^+(\text{aq})|\text{Ag}^+|\text{Ag}
H
2
(
Pt
)
∣
H
3
O
+
(
aq
)
∣
Ag
+
∣
Ag
. The measured EMF of the cell is 1.0 V. What is the value of
x
x
x
?
pH
=
5.03
\text{pH} = 5.03
pH
=
5.03
|
x
M
x\,\text{M}
x
M
E
Ag
+
/
Ag
∘
=
+
0.8
V
E^\circ_{\text{Ag}^+/\text{Ag}} = +0.8\,\text{V}
E
Ag
+
/
Ag
∘
=
+
0.8
V
. [
T
=
25
∘
C
T = 25^\circ\text{C}
T
=
2
5
∘
C
] (A)
2
×
10
−
2
M
2 \times 10^{-2}\,\text{M}
2
×
1
0
−
2
M
(B)
2
×
10
−
3
M
2 \times 10^{-3}\,\text{M}
2
×
1
0
−
3
M
(C)
1.5
×
10
−
3
M
1.5 \times 10^{-3}\,\text{M}
1.5
×
1
0
−
3
M
(D)
1.5
×
10
−
2
M
1.5 \times 10^{-2}\,\text{M}
1.5
×
1
0
−
2
M
(A)
2
×
10
−
2
M
2 \times 10^{-2}\,\text{M}
2
×
1
0
−
2
M
(B)
2
×
10
−
3
M
2 \times 10^{-3}\,\text{M}
2
×
1
0
−
3
M
(C)
1.5
×
10
−
3
M
1.5 \times 10^{-3}\,\text{M}
1.5
×
1
0
−
3
M
(D)
1.5
×
10
−
2
M
1.5 \times 10^{-2}\,\text{M}
1.5
×
1
0
−
2
M
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