Problem: Calculate the mass percent composition of each constituent element of lead(II) phosphate.

FREE Expert Solution

Assume 100 g sample.

The chemical formula of lead (II) phosphate is (Pb)3(PO4)2.

Step 1. Compute for the mass of each element for every 100 sample.

mass Pb=100 g (Pb)3(PO4)2(1 mol (Pb)3(PO4)2811.54 g (Pb)3(PO4)2)(3 mol Pb1 mol (Pb)3(PO4)2)(207.2 g Pb1 mol Pb)=76.6 g Pb

mass P=100 g (Pb)3(PO4)2(1 mol (Pb)3(PO4)2811.54 g (Pb)3(PO4)2)(2 mol P1 mol (Pb)3(PO4)2)(30.97 g P1 mol P)=7.63 g P

mass O=100 g (Pb)3(PO4)2(1 mol (Pb)3(PO4)2811.54 g (Pb)3(PO4)2)(8 mol O1 mol (Pb)3(PO4)2)(16.00 g O1 mol O)=15.77 g O

Step 2. Calculate percent composition.

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Problem Details

Calculate the mass percent composition of each constituent element of lead(II) phosphate.

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