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) . , .. . - , .. .

NaOH+HCl = NaCl+H2O;

OH- +H+=H2O

) (II) . . , .. :

CuSO4+2NaOH = Cu(OH)2↓+Na2SO4;

Cu2+ + 2O- = Cu(OH)2↓i;

Cu(OH)2+H2SO4 = CuSO4+2H2O;

Cu(OH)2+2H+ = Cu2++2H2O.

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