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October 2021
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осуществить цепочку
k20->k2so4->kcl->k->k2o->koh->k2s->kno3
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lyubavasil
K2O+SO3=K2SO4
K2SO4+BaCl2=BaSO4+2KCl
2KCl=2K+Cl2( электролиз расплава)
2K+O2=K2O2 K2O2+2K=2K2O
K2O+H2O=2KOH
2KOH+H2S=K2S+2H2O
K2S+Pb(NO3)2=PbS++2KNO3
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Answers & Comments
K2SO4+BaCl2=BaSO4+2KCl
2KCl=2K+Cl2( электролиз расплава)
2K+O2=K2O2 K2O2+2K=2K2O
K2O+H2O=2KOH
2KOH+H2S=K2S+2H2O
K2S+Pb(NO3)2=PbS++2KNO3