а) W(P) = Ar(P) * n / Mr(P2O5) * 100% = 31 * 2 / 142 * 100% =43,6%
б) W(P) = Ar(P) * n / Mr(KH2PO4) * 100% = 31 * 1 / 136 *100% = 22,79%
в) W(P) = Ar(P) *n / Mr(P2O3) * 100% = 31 * 2 / 110 * 100% = 56,36%
г) W(P) = Ar(P) * n / Mr (CaHPO4) * 100% = 31 * 1 / 136 * 100% =22,79 %
Массовая доля фосфора наибольшая в (в)
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Answers & Comments
а) W(P) = Ar(P) * n / Mr(P2O5) * 100% = 31 * 2 / 142 * 100% =43,6%
б) W(P) = Ar(P) * n / Mr(KH2PO4) * 100% = 31 * 1 / 136 *100% = 22,79%
в) W(P) = Ar(P) *n / Mr(P2O3) * 100% = 31 * 2 / 110 * 100% = 56,36%
г) W(P) = Ar(P) * n / Mr (CaHPO4) * 100% = 31 * 1 / 136 * 100% =22,79 %
Массовая доля фосфора наибольшая в (в)