Bab 2: Redoks & Elektrokimia
Pertanyaan 1
Perhatikan reaksi-reaksi berikut: (1)
2
H
2
S
(
g
)
+
S
O
2
(
g
)
→
3
S
(
s
)
+
2
H
2
O
(
l
)
2H_2S (g) + SO_2 (g) \rightarrow 3S (s) + 2H_2O (l)
2
H
2
S
(
g
)
+
S
O
2
(
g
)
→
3
S
(
s
)
+
2
H
2
O
(
l
)
(2)
C
l
2
(
g
)
+
2
N
a
O
H
(
a
q
)
→
N
a
C
l
(
a
q
)
+
N
a
C
l
O
(
a
q
)
+
H
2
O
(
l
)
Cl_2 (g) + 2NaOH (aq) \rightarrow NaCl (aq) + NaClO (aq) + H_2O (l)
C
l
2
(
g
)
+
2
N
a
O
H
(
a
q
)
→
N
a
Cl
(
a
q
)
+
N
a
ClO
(
a
q
)
+
H
2
O
(
l
)
(3)
2
K
C
l
O
3
(
s
)
→
2
K
C
l
(
s
)
+
3
O
2
(
g
)
2KClO_3 (s) \rightarrow 2KCl (s) + 3O_2 (g)
2
K
Cl
O
3
(
s
)
→
2
K
Cl
(
s
)
+
3
O
2
(
g
)
(4)
3
B
r
2
(
l
)
+
6
N
a
O
H
(
a
q
)
→
5
N
a
B
r
(
a
q
)
+
N
a
B
r
O
3
(
a
q
)
+
3
H
2
O
(
l
)
3Br_2 (l) + 6NaOH (aq) \rightarrow 5NaBr (aq) + NaBrO_3 (aq) + 3H_2O (l)
3
B
r
2
(
l
)
+
6
N
a
O
H
(
a
q
)
→
5
N
a
B
r
(
a
q
)
+
N
a
B
r
O
3
(
a
q
)
+
3
H
2
O
(
l
)
Reaksi yang termasuk jenis disproporsionasi (autoredoks) adalah...
A
(1) dan (2)
B
(2) dan (3)
C
(1) dan (3)
D
(2) dan (4)
E
(3) dan (4)