(d) Estimation of phosphorous: A known mass of compound is heated with fuming HNO_(3) or sodiumperoxide (Na_(2)O_(2)) in Carius tube which converts phosphorrous to H_(3)PO_(4) . Magnesia mixture (MgCl_(2) + NH_(4)Cl) is then added, which gives the precipitate of magnesium ammonium phosphate (MgNH_(4).PO_(4)) which on heatinggives magnesium pyrophosphate (Mg_(2)P_(2)O_(7)) , which is weighed. 0.124 gm of an organic compound containing phosphorus gave 0.222 gm of Mg_(2)P_(2)O_(7) by the usual analysis . Calculate the percentage of phosphorous in the compound (Mg=24, P=31)

(d) Estimation of phosphorous: A known mass of compound is heated wit

1.	(d) Estimation of phosphorous: A known mass of compound is heated with fuming HNO_(3) or sodiumperoxide (Na_(2)O_(2)) in Carius tube which converts phosphorrous to H_(3)PO_(4) . Magnesia mixture (MgCl_(2) + NH_(4)Cl) is then added, which gives the precipitate of magnesium ammonium phosphate (MgNH_(4).PO_(4)) which on heatinggives magnesium pyrophosphate (Mg_(2)P_(2)O_(7)) , which is weighed. 0.124 gm of an organic compound containing phosphorus gave 0.222 gm of Mg_(2)P_(2)O_(7) by the usual analysis . Calculate the percentage of phosphorous in the compound (Mg=24, P=31)
Answer» 25 75 62 50 Answer :D