mamy 2 zlewki. W pierwszej NaOH, co powstanie jesli dodamy jony; Fe 3+ i Ba 2+. A co powstanie gdy doDAmY te jony do K2SO4 . ?
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1) 3NaOH + Fe ---> Fe(OH)3 +3 Na
2NaOH + Ba ---> Ba(OH)2 + 2Na
2) 3K2SO4 + 2Fe ---> Fe2(SO4)3 +6 K
K2SO4 + Ba ---> BaSO4 + 2K
K2SO4 + 2NaOH--> Na2SO4 + 2KOH