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Question
Chemistry
What is superphosphate of lime?
Q. What is superphosphate of lime?
63
149
NTA Abhyas
NTA Abhyas 2022
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A
A mixture of normal calcium phosphate and gypsum
0%
B
A mixture of primary calcium phosphate and gypsum
75%
C
Normal calcium phosphate
0%
D
Soluble calcium phosphate
25%
Solution:
Superphosphate of lime - It is a mixture of calcium dihydrogen phosphate and gypsum and is obtained by treating phosphatic rock will conc.
H
2
S
O
4
C
a
3
(
P
O
4
)
2
+
2
H
2
S
O
4
+
5
H
2
O
→
C
a
(
H
2
P
O
4
)
2
⋅
2
H
2
O
+
2
C
a
S
O
4
⋅
2
H
2
O