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0.40g of an organic compound containing ...

0.40g of an organic compound containing phosphorus gave 0.555 g of `Mg_(2)P_(2)O_(7)` by usual analysis calculate the % of phosphorus in the organic compound

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The correct Answer is:
`38.75%`
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0.092 g of an organic compound containing phosphorus gave 0.111 g Mg_(2)P_(2)O_(7) usual analysis Calculate the % of phosphorus in the organic compound.

0.092 g of an organic compound containing phosphorus gave 0.111 g of Mg_(2)P_(2)O_(7) by usual analysis. Calculate the percentage of phosphorus in the organic compound.

Knowledge Check

  • Estimation of phosphorous: Second method: A known mass of compound is heated with fuming HNO_(3) or sodium peroxide (Na_(2)O_(2) in Carius tube which converts phosphorous to H_(3)PO_(4) . Magnesia mixture (MgCl_(2)+NH_(4)Cl) is then added, which gives the percipate of magnesium ammonium phosphate (MgNH_(4).PO_(4)) which on heating gives magnesium pyrophosphate (Mg_(2)P_(2)O_(7)) , which is weighted. Percentage of P =("Atomic mass of P")/("Molecular mass of " Mg_(2)P_(2)O_(7)) xx ("Molecular mass of "Mg_(2)P_(2)O_(7) xx 100)/("Mass of compound")=(62)/(222) xx("Mass of " Mg_(2)P_(2)O_(7)xx 100)/("Mass of compound") 0.12 gm of and organic compound containing phosphorus gave 0.22 gm of Mg_(2)P_(2)O_(7) by the usual analysis. Calculate the percentage of phosphorus in the compound.

    A
    25
    B
    9.25
    C
    801
    D
    `51.20`

  • (d) Estimation of phosphorous: A known mass of compound is heated with fuming HNO_(3) or sodium peroxide (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 heating gives 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)

    A
    25
    B
    75
    C
    62
    D
    50

  • 0.12 g of an organic compound containing phosphorus gave 0.22 g of Mg2P20 7 by usual analysis. Calculate the percentage of phosphorus m the compound.

    A
    0.65
    B
    0.61
    C
    0.58
    D
    0.512

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    0.12 g of an organic compound containing phosphorus gave 0.22 g of Mg_(2)P_(2)O_(7) by the usual analysis. Calculate the percentage of phosphorus in the compound.

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    0.2 of an organic compound containing phosphorus gave 1.877 g of ammonium phosphomolybdate by usual analysis. Calculate the percentage of phosphorus in the organic compound.

    0.4 g an organic compound containing phosphorus gave 0.555 g of magnesium pyrophosphate by usual analysis. Calculate the percentage of phosphorus m the compound.

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