Cl2O7+H20=HCL04
CL2O7+H20=HCLO4
Ответ:
P2O5 + 3 H2O → 2 H3PO4
Fe(OH)3 + 3 HCl → 3 H2O + FeCl3
дано
m(PbS) = 25 g
η(SO2) = 77%
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V практ (SO2)-?
2PbS+3O2-->2PbO+2SO2
M(PbS) = 207+32 = 239 g/mol
n(PbS) = m/M = 25 / 239 = 0.1 mol
2n(PbS) = 2n(SO2) = 0.1 mol
V теор (SO2) = n*Vm = 0.1 * 22.4 = 2.24 l
V практ(SO2) = 2.24 * 77% / 100% = 1.72 L
ответ 1.72 л