Ответ:
8. P→P2O5→NaPO4→NaH2PO49.a) 2Al+3H2SO4→Al(SO4)3+3H2 б)2Fe(OH)3+3H2SO4→Fe2(SO4)3+6H2O в)Zn(OH)2+2NaOH (t°)→Na2ZnO2+2H2O
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Ответ:
8. P→P2O5→NaPO4→NaH2PO4
9.a) 2Al+3H2SO4→Al(SO4)3+3H2
б)2Fe(OH)3+3H2SO4→Fe2(SO4)3+6H2O
в)Zn(OH)2+2NaOH (t°)→Na2ZnO2+2H2O