Pb3O4+Ca(OCl)2—->
Pb(CH3COO)2+Cl2NaOH—->
Pb(NO3)2+NaClO+NaOH—->

PbO2+Cr(NO3)3+NaOh——>
SnCl2+KBiO3+HCl——>
GeH4+AgNO3+H2O—->HNO3+...
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