p2o5 % in Phosphoric acid

[parth]

Anyone help me on given question.
i want to calculate p2o5 % of 85% H3PO4.
Please give me solution to above question.
Thanks

[Farooq W]

Post by parth
Anyone help me on given question.
i want to calculate p2o5 % of 85% H3PO4.
Please give me solution to above question.
Thanks

This is 85% w/w conc. H3PO4. Need to know the density of acid. Convert
the moles of H3PO4 to mol of P2O5 by writing a balanced equation.

[G***@gmail.com]

Maybe it will be answer to your question:
Conc. of P2O5 in 100% H3PO4 is 72.45%, because
H3PO4 = 0.5 P2O5 + 1.5 H2O, because H3PO4 = HPO3 + H2O and 2HPO3 =
P2O5 + H2O
M(P2O5)=98 kg/kmol M(P2O5)=142 kg/kmol M(H2O)=18 kg/kmol, so
Conc. P2O5 = (0.5 * 142) / 98 * 100% = 72.45 %
But we have Conc. of H3PO4 85%, so proportion:
72.5% P2O5 in 100% H3PO4
X% P2O5 in 85% H3PO4

X = (85*72.5)/100 = 61.6 %

ANSWER: Coc. P2O5 in 85% H3PO4 is 61.6%

Post by parth
Anyone help me on given question.
i want to calculate p2o5 % of 85% H3PO4.
Please give me solution to above question.
Thanks