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RUET_05-06
HSC - রসায়ন ২য় পত্র
→
অধ্যায়-০৪ঃ তড়িৎ রসায়ন
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All Topics
নিম্নোক্ত রাসায়নিক বিক্রিয়ায় কোষের তড়িৎ চালক বল (emf) নির্ণয় কর।
M
g
(
s
)
+
2
A
g
+
(
a
q
)
→
M
g
2
+
(
a
q
)
+
2
A
g
(
s
)
[
M
g
2
+
]
=
0.13
M
and
[
A
g
+
]
=
1.0
×
1
0
−
4
M
at
2
5
∘
C
,
E
A
g
+
/
A
g
∘
=
.
80
V
&
E
M
g
2
/
M
g
0
=
−
2.37
V
\begin{array}{l}\mathrm{Mg}(\mathrm{s})+2 \mathrm{Ag}^{+}(\mathrm{aq}) \rightarrow \mathrm{Mg}^{2+}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s}) \\{\left[\mathrm{Mg}^{2+}\right]=0.13 \mathrm{M} \text { and }\left[\mathrm{Ag}^{+}\right]=1.0 \times 10^{-4} \mathrm{M}}\\\text{at } 25^{\circ} \mathrm{C}, \mathrm{E}_{\mathrm{Ag}^{+} / \mathrm{Ag}}^{\circ}=.80 \mathrm{~V} \mathrm{\&} \mathrm{E}_{\mathrm{Mg}^{2} / \mathrm{Mg}}^{0}=-2.37 \mathrm{~V}\end{array}
Mg
(
s
)
+
2
Ag
+
(
aq
)
→
Mg
2
+
(
aq
)
+
2
Ag
(
s
)
[
Mg
2
+
]
=
0.13
M
and
[
Ag
+
]
=
1.0
×
1
0
−
4
M
at
2
5
∘
C
,
E
Ag
+
/
Ag
∘
=
.80
V
&
E
Mg
2
/
Mg
0
=
−
2.37
V
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