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Q.
What is superphosphate of lime?
NTA AbhyasNTA Abhyas 2022
Solution:
Superphosphate of lime - It is a mixture of calcium dihydrogen phosphate and gypsum and is obtained by treating phosphatic rock will conc. $H_{2}SO_{4}$
$Ca _3\left( PO _4\right)_2+2 H _2 SO _4+5 H _2 O \rightarrow Ca \left( H _2 PO _4\right)_2 \cdot 2 H _2 O +2 CaSO _4 \cdot 2 H _2 O$