Write the reaction equations: CuSO4 – Cu (NO3) 2 – Pb (NO3) 2 – K2PbO2 – Pb (OH) 2

Let’s compose the reaction equations:
CuSO4 + 2HNO3 = Cu (NO3) 2 + H2SO4;
Cu (NO3) 2 + Pb (OH) 2 = Pb (NO3) 2 + Cu (OH) 2;
Pb (NO3) 2 + Zn = Pb + Zn (NO3) 2;
Pb + 2 KOH = K2PbO2 + H2;
Lead exhibits amphoteric properties; as a result of the reaction, lead plumbate is formed.
K2PbO2 is an unstable compound; it decomposes when heated.
K2PbO2 = K2O + PbO + O2
To obtain lead hydroxide, it is necessary to carry out the following reactions:
PbO + 2HNO3 = Pb (NO3) 2 + H2O;
Pb (NO3) 2 + 2 NaOH = Pb (OH) 2 + 2 NaNO3
All lead compounds are toxic.