All phosphates give a bright yellow precipitate of `"_____"` when dissolved in nitric acid and warmed ( not boiled ) with an excess of ammonium molylbdate solutionA. `(NH_(4))_(3)PO_(4).12MoO_(3)`B. `(NH_(4))_(3)PO_(4).11MoO_(3)`C. `(NH_(4))_(3)PO_(4).10MoO_(3)`D. `(NH_(4))_(3)PO_(4).14MoO_(3)`

All phosphates give a bright yellow precipitate of `"_____"` when diss

1.	All phosphates give a bright yellow precipitate of `"_____"` when dissolved in nitric acid and warmed ( not boiled ) with an excess of ammonium molylbdate solutionA. `(NH_(4))_(3)PO_(4).12MoO_(3)`B. `(NH_(4))_(3)PO_(4).11MoO_(3)`C. `(NH_(4))_(3)PO_(4).10MoO_(3)`D. `(NH_(4))_(3)PO_(4).14MoO_(3)`
Answer» Correct Answer - 1 Phosphorous (including orthophosporous acid)give a yellow precipitate of ammonium phosphomolybdate when warned to about `60^(@)C` with nitric acid and ammonium amolybdate solution: `H_(3)PO_(4)+21HNO_(3)+12(NH_(3))_(2)MoO_(4)rarr(NH_(4))_(3)PO_(4)12MoO_(3)+21NH_(4)NO_(3)+12H_(2)O` This same test is also given by condensed phosphates ,since hydrolysis to normal phosphates takes place on warning ,However ,precipitaion of ammonium phosphomolybdate in these cases is a much slower process. Arsenates give a similar percipitate only when boiled with these reagents.

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All phosphates give a bright yellow precipitate of `"_____"` when dissolved in nitric acid and warmed ( not boiled ) with an excess of ammonium molylbdate solutionA. `(NH_(4))_(3)PO_(4).12MoO_(3)`B. `(NH_(4))_(3)PO_(4).11MoO_(3)`C. `(NH_(4))_(3)PO_(4).10MoO_(3)`D. `(NH_(4))_(3)PO_(4).14MoO_(3)`

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