0.5 gm of an organic substance containing prosphorous was heated with sonc. `HNO_3` is the carius tube. The phosphoric acid thus formed was preciopitated with magnesia mixture `(MgNH_4PO_4)` which on ignition gave a residue of 1.0 gm of magnesium phrrophosphate `(Mg_2P_2O_7)`. The precentage of phosphorous in the organic compound is:

0.5 gm of an organic substance containing prosphorous was heated with sonc. HNO_3 is the carius tube. The phosphoric acid thus formed was precipitated with magnesia mixture (MgNH_4PO_4) which on ignition gave a residue of 1.0 gm of magnesium phyrophosphate (Mg_2P_2O_7) . The precentage of phosphorous in the organic compound is:

0.5 gm of an organic substance containing phosphorous was heated with conc. HNO_(3) in the Carius tube. The phosphoric acid thus formed was precipitated with magnesia mixture ( MgNH_(4)PO_(4) ) which on ignition gave a residue of 1.0 gm of magnesium pyrophosphate ( Mg_(2)P_(2)O_(7) ). The percentage of phosphorous in the organic compound is :

0.5 g of an organic substance containing phosphorus was heated with conc HNO_(3) in the carius tube, the phosphoric acid thus formed was precipitated with magnesia mixture (MgNH_(4)PO_(4)) which on ignition gave a residue to 1.0 g of megnesium pyrophosphate (Mg_(2)P_(2)O_(7)) The percentage of phosphorous in the organic compound is

0.5 g of an organic substance containing phosphorus was heated with conc HNO_(3) in the carius tube, the phosphoric acid thus formed was precipitated with magnesia mixture (MgNH_(4)PO_(4)) which on ignition gave a residue to 1.0 g of megnesium pyrophosphate (Mg_(2)P_(2)O_(7)) The percentage of phosphorous in the organic compound is

0.3160 g of an organic substance was heated with fuming nitric acid in a carius tube to convert phosphorus present into phosphoric acid. Addition of magnesia mixture formed MgNH_(4)PO_(4) which upon heating gave 0.1697 g Mg_(2)P_(2)O_(7) . Calculate the percentage of phosphorus in the compound.

In a gravimetric determination of phosphorus 0.24 gr of an organic compound was strongly heated in carius tube with conc nitric acid. Phosphoric acid so produced was precipitated as MgNH_(4)PO_(4) which on ignition yielded 0.444 gr of Mg_(2)P_(2)O_(7) the percentage of phosphorus in the compound is ........... x 10 [Mg = 24, P = 31, O = 16]