1) Cu(OH)2=CuO+H2O
2) CuO+H2SO4=CuSO4+H2O
3) CuSO4+2NaOH=Cu(OH)2+Na2SO4
4) 2NHO3+CuOH2=Cu(NO3)2+2H2O
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Answers & Comments
1) 3Fe(OH)3 + 3Na2SO4 - Fe2(SO4)3 + 6NaOH
2) Fe2(SO4)3 + 6HCl = 2FeCl3 + 3H2SO4
3) FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
4) 2Fe(OH)3 = Fe2O3 + 3H2O
б) Cu(OH)2-->CuO-->CuSO4-->Cu(OH)2-->Cu(NO3)2
1) Cu(OH)2=CuO+H2O
2) CuO+H2SO4=CuSO4+H2O
3) CuSO4+2NaOH=Cu(OH)2+Na2SO4
4) 2NHO3+CuOH2=Cu(NO3)2+2H2O