例:
一,碱:
NaOH溶液:4H+ +4e-==2H2.4OH- -4e==2H2O+O2
(2H2O==2H2+O2)
其余可溶碱一样,不溶碱..
二,酸:
HCl溶液:2H+ +2e-==H2.2Cl- -2e==Cl2
(2HCl==H2+Cl2)
H2SO4溶液:4H+ +4e-==2H2.4OH- -4e==2H2O+O2
(2H2O==2H2+O2)
其余一元酸与盐酸一致(加上H2S),含氧酸与硫酸一致(加上HF)
三,盐:
Na2SO4溶液:4H+ +4e-==2H2.4OH- -4e==2H2O+O2
(2H2O==2H2+O2)
CuSO4溶液:2Cu2+ +4e-==2Cu.4OH- -4e==2H2O+O2
(2CuSO4+2H2O==2Cu+H2SO4+O2)
CuCl2溶液:Cu2+ +2e-==Cu.2Cl- -2e==Cl2
(CuCl2==Cu+Cl2)
NaCl溶液:2H+ +2e-==H2.2Cl- -2e==Cl2
(2NaCl+2H2O==2NaOH+Cl2+H2)
其余强酸强碱盐与Na2SO4一致,弱酸弱碱盐与CuCl2一致
强酸弱碱盐与CuSO4一致,强碱弱酸盐NaCl一致,强弱顺序按照得失离子能力写
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