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Question
Chemistry
Superphosphate of lime is
Q. Superphosphate of lime is
1577
204
The p-Block Elements - Part2
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A
A mixture of normal calcium phosphate and gypsum
B
A mixture of primary calcium phosphate and gypsum
C
Normal calcium phosphate
D
Soluble calcium phosphate
Solution:
Superphosphate of lime: It is a mixture of calcium dihydrogen phosphate and gypsum and is obtained by treating phosphate rock with conc.
H
2
S
O
4
C
a
3
(
P
O
4
)
2
+
2
H
2
S
O
4
+
5
H
2
O
→
Superphosphate of lime
C
a
(
H
2
P
O
4
)
2
,
2
H
2
O
+
2
C
a
S
O
4
.2
H
2
O