Które z tych soli ulegają hydrolizie (napisać reakcje): FeCl2, NaNO2, CuCl, CH3COONa, Na2S?
FeCl2, CuCl, CH3COONa, NaNO2, Na2S
1. FeCl2 + 2H2O ---> Fe(OH)2 + 2HCl
Fe(2+) + 2H2O --> Fe(OH)2 + 2H(+)
2. CuCl + H2O ---> CuOH + HCl
Cu(+) + H2O --> CuOH + H(+)
3. CH3COONa + H2O <---> CH3COOH + NaOH
CH3COO(-) + H2O <---> CH3COOH + OH(-)
4. NaNO2 + H2O -> NaOH + HNO2NO2(-) + H2O ---> HNO2 + OH(-)
5. Na2S + 2H2O --> H2S + 2NaOH
S(2-) + 2H2O ---> H2S + 2OH(-)
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FeCl2, CuCl, CH3COONa, NaNO2, Na2S
1. FeCl2 + 2H2O ---> Fe(OH)2 + 2HCl
Fe(2+) + 2H2O --> Fe(OH)2 + 2H(+)
2. CuCl + H2O ---> CuOH + HCl
Cu(+) + H2O --> CuOH + H(+)
3. CH3COONa + H2O <---> CH3COOH + NaOH
CH3COO(-) + H2O <---> CH3COOH + OH(-)
4. NaNO2 + H2O -> NaOH + HNO2
NO2(-) + H2O ---> HNO2 + OH(-)
5. Na2S + 2H2O --> H2S + 2NaOH
S(2-) + 2H2O ---> H2S + 2OH(-)