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Problem
Problem
Which reactions are used for the preparation of the halogen acid? a.
2
K
B
r
+
H
2
S
O
4
→
(conc.)
K
2
S
O
4
+
2
H
B
r
2KBr + H_2SO_4 \xrightarrow{\text{(conc.)}} K_2SO_4 + 2HBr
2
K
B
r
+
H
2
S
O
4
(conc.)
K
2
S
O
4
+
2
H
B
r
b.
C
a
F
2
+
H
2
S
O
4
→
(conc.)
C
a
S
O
4
+
2
H
F
CaF_2 + H_2SO_4 \xrightarrow{\text{(conc.)}} CaSO_4 + 2HF
C
a
F
2
+
H
2
S
O
4
(conc.)
C
a
S
O
4
+
2
H
F
c.
N
a
C
l
+
H
2
S
O
4
→
(conc.)
N
a
H
S
O
4
+
H
C
l
NaCl + H_2SO_4 \xrightarrow{\text{(conc.)}} NaHSO_4 + HCl
N
a
C
l
+
H
2
S
O
4
(conc.)
N
a
H
S
O
4
+
H
C
l
d.
2
K
I
+
H
2
S
O
4
→
(conc.)
K
2
S
O
4
+
2
H
I
2KI + H_2SO_4 \xrightarrow{\text{(conc.)}} K_2SO_4 + 2HI
2
K
I
+
H
2
S
O
4
(conc.)
K
2
S
O
4
+
2
H
I
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