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Work out the percentage composition constituents element in the following lead phosphate |
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Answer» n : Work out percentage composition of constituents elements in the following compound.1. Lead phosphate [Pb3 ( PO4)2]2.Potassium dichromate ( K2 Cr2 O2)3.Macrocosmic salt - Sodium ammonium hydrogen phosphate , tectrahyrate(NaNH4 HPO4.4H2O)Answer: a. Lead phosphategiven. PB= 207, P = 31 , O = 16Total MASS of Pb3 (PO4)2=3(207)+(31+4(16))=621+(62+128)=811Percentage of Pb = 3(207)÷811×100=76.57%b. Similarly FIND for potassium dichromate(K2 Cr2 O2)Similarly find for p = 2× 31÷811×100 = 7.64%c. Similarly find % of O = 4× 128÷811×100 = 15.78HOPE THIS HELPS YOU FRD. |
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