The chemical formula for calcium pyrophosphat | vedclass

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(C) The formula of calcium pyrophosphate is $Ca_2P_2O_7$. In this compound,the calcium ion is $Ca^{2+}$. Since there are two $Ca^{2+}$ ions,the total

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$Fe_4(P_2O_7)_3$

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(C) The formula of calcium pyrophosphate is $Ca_2P_2O_7$. In this compound,the calcium ion is $Ca^{2+}$. Since there are two $Ca^{2+}$ ions,the total positive charge is $+4$. Therefore,the pyrophosphate radical $(P_2O_7)$ must have a valency of $-4$,i.e.,$(P_2O_7)^{4-}$. Ferric ion is $Fe^{3+}$. To balance the charges in ferric pyrophosphate,we use the criss-cross method: $Fe^{3+}$ and $(P_2O_7)^{4-}$ combine to form $Fe_4(P_2O_7)_3$.

The chemical formula for calcium pyrophosphate is $Ca_2P_2O_7$. The formula for ferric pyrophosphate will be

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