Осуществить ряд превращений:
Na -» Na202 -> Na2 О -> NaOH -> Na2 S03 -> S02 -> BaS03
Cu(OH)2 —>CuO ->Cu ->CuO —>CuS04 -> Cu(OH)2
Na -» Na202 -> Na2 О -> NaOH -> Na2 S03 -> S02 -> BaS03
Cu(OH)2 —>CuO ->Cu ->CuO —>CuS04 -> Cu(OH)2
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Answers & Comments
Na2O2 + 2Na = 2 Na2O
Na2O + H2O = 2NaOH
2NaOH + H2SO3 = Na2SO3 + H2O
Na2So3 + H2O =2SO2 + 2NaOH
So2 + Ba(OH)2 = BaSO3 + H2O
2)Cu(OH)2 =CuO +H2O
Cuo + H2 = Cu + H2O
2Cu + O2 = 2 CuO
CuO + H2SO4 = CuSo4 + H2O
CuSo4 + 2KOH = Cu(OH)2 + K2SO4