The percentage of phosphorus in the double superphosphate - вопрос №8754048 от Всеникизаняты00 28.08.2022 20:41

Question

Химия: The percentage of phosphorus in the double superphosphate

Всеникизаняты00 · Answer

Ca(H₂PO₄)₂ - double superphosphate1) Firstly need to know the molar massMr(Ca(H₂PO₄)₂) = 40 + 2·(2+31+64) = 40 + 2·97 = 234 g/mol2) Find the mass fraction by the formulaω(R) = , where R - element and RX - substanceω(P) =  = 25,5 %...