Question

PbO -> Pb(NO3)2 -> PbSO4 -> pbO -> Pb(OH)2 -> PbCl2 -> Pb3(PO4)2
СРОЧНО!!!

Answer 1

Pb-PbO-PbCl2-Pb(OH)2-PbO-Pb-PbS
1. 2Pb + O2 = 2PbO
2. PbO + 2HCl = PbCl2 + H2O
3. PbCl2 + 2NaOH = Pb(OH)2 (осадок, стрелка вниз) + 2NaCl
4. Pb(OH)2 = PbO + H2O
5. PbO + H2 = Pb + H2O
6. Pb + H2S = PbS + H2 (газ, стрелка вверх)

П