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Question: The chemical formula for certain pyrophosphate is \(Ca_{2}P_{2}O_{7}\) , the formula of its ferric p...

The chemical formula for certain pyrophosphate is Ca2P2O7Ca_{2}P_{2}O_{7} , the formula of its ferric pyrophosphate will be.

A

Fe2(P2O7)3Fe_{2}(P_{2}O_{7})_{3}

B

Fe4(P4O14)Fe_{4}(P_{4}O_{14})

C

Fe4(P2O7)3Fe_{4}(P_{2}O_{7})_{3}

D

Fe3PO4Fe_{3}PO_{4}

Answer

Fe4(P2O7)3Fe_{4}(P_{2}O_{7})_{3}

Explanation

Solution

Ca2P2O72Ca+++(P2O7)4Fe+3+(P2O7)4Fe4(P2O7)3Ca_{2}P_{2}O_{7} \rightarrow 2Ca^{+ +} + (P_{2}O_{7})^{4 -}Fe^{+ 3} + (P_{2}O_{7})^{4 -} \rightarrow Fe_{4}(P_{2}O_{7})_{3}