Superphosphate is a mixture of

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(D) Superphosphate of lime is produced by the action of concentrated sulfuric acid on phosphate rock (calcium phosphate). The chemical reaction is: $C

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$Ca(H_2PO_4)_2 \cdot H_2O + 2CaSO_4 \cdot 2H_2O$

Vedclass · Answer

(D) Superphosphate of lime is produced by the action of concentrated sulfuric acid on phosphate rock (calcium phosphate). The chemical reaction is: $Ca_3(PO_4)_2 + 2H_2SO_4 + 4H_2O \rightarrow Ca(H_2PO_4)_2 \cdot H_2O + 2CaSO_4 \cdot 2H_2O$. Thus,it is a mixture of monocalcium phosphate monohydrate and calcium sulfate dihydrate.

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