15. Calculate the percentage of phosphorus in:
(a) Calcium hydrogen phosphate Ca(H,PO.)2
(b) Calcium phosphate Ca,(PO),
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15. Calculate the percentage of phosphorus in:
(a) Calcium hydrogen phosphate Ca(H,PO.)2
(b) Calcium phosphate Ca,(PO),
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Answer:
thank dietitian Osvaldo Brandon
Verified answer
Explanation:
Relative molecular mass of Ca
=40.07+(1×4)+(30.9×2)+(16×8)
=40.07+4+61.8+128
=233.87
233.87gCa(H2
PO
4
)
2
contains 61.8gP
So, 100gCa(H
2
PO
4
)
2
contains
233.87
100×61.8
=26.42g
The % of P in Ca(H
2
PO
4
)
2
is 26.42%