A bivalent metal forms a salt with the oxyacid of a solid non-metal in which the non-metallic element has +5 oxidation state. The salt formed cannot be used as a fertiliser though it contains essential nutrients and is available as mineral in nature. However, the salt when treated with conc. H_3PO_4 gives an important and describe fertiliser when compared with conc H_2SO_4. Identify the various substances involved and give equations.

A bivalent metal forms a salt with the oxyacid of a solid non-metal in

1.	A bivalent metal forms a salt with the oxyacid of a solid non-metal in which the non-metallic element has +5 oxidation state. The salt formed cannot be used as a fertiliser though it contains essential nutrients and is available as mineral in nature. However, the salt when treated with conc. H_3PO_4 gives an important and describe fertiliser when compared with conc H_2SO_4. Identify the various substances involved and give equations.
Answer» Solution :(i) IDENTIFICATION of the oxyacid of solid non-metal which can exhibit the given oxidation state. (ii) identification of salt formed (iii) solubility of the salt formed (iv) proudces obtained when the salt reacts with `H_3PO_4 and H_2SO_4` SEPARATELY (V) solubility of the PRODUCTS formed (VI) comparison of the extent of acidity imparted to the soil by both the proudcts.