Phosphates can be estimated quantitatively by precipitating them asA. `Ca_(3)(PO_(4))_(2)`B. `AlPO_(4)`C. `Mg_(3)(PO_(4))_(2)`D. `MgNH_(4)PO_(4)`

Phosphates can be estimated quantitatively by precipitating them asA.

1.	Phosphates can be estimated quantitatively by precipitating them asA. `Ca_(3)(PO_(4))_(2)`B. `AlPO_(4)`C. `Mg_(3)(PO_(4))_(2)`D. `MgNH_(4)PO_(4)`
Answer» Correct Answer - 4 Phosphates precipate magnesium ammonium phosphate when added to an ammoniacal solution of magnesium chloride .If this precipitate is washed, filtered and ignited it forms magnesium diphoshate .This can weighted and thus phosphates can be estimated qantitatively. `2Mg^(2+)(NH_(4)^(+))PO_(4)^(3)(s)rarr(Mg^(2+))_(2)P_(2)O_(7)^(4-)(s)+2NH_(3)(g)+H_(2)O(l)`

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Phosphates can be estimated quantitatively by precipitating them asA. `Ca_(3)(PO_(4))_(2)`B. `AlPO_(4)`C. `Mg_(3)(PO_(4))_(2)`D. `MgNH_(4)PO_(4)`

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