Цепочка уравнений:
Cr - CrCl3 - Cr(NO3)3 - (KOH (3 моль)) X
Pb(OH)2 - X - Pb(NO3)2 - (Fe) X
Cr - CrCl3 - Cr(NO3)3 - (KOH (3 моль)) X
Pb(OH)2 - X - Pb(NO3)2 - (Fe) X
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Answers & Comments
CrCl3+3AgNo3=3AgCl+Cr(No3)3
Cr(No3)3+3KOh=Cr(Oh)3+3KNO3
Pb(OH)2=PbO+H2O (t)
PbO+2HNo3=Pb(No3)2+h2o
Pb(No3)2+Fe=Fe(No3)2+Pb