A.H2O + H2OH3O+ + OH- | B.HCO3-+ H2O H3O+ + CO32- |
C.CO32-+ H2OHCO3-+OH- | D.HCO3-+OH-H2O + CO32- |
A.AlCl3·6H2O | B.AlCl3 |
C.Al(OH)3 | D.Al2O3 |
A.C(Na+)= C(CH3COO-)+C(CH3COOH) |
B.C(Na+)+ C(OH-)= C(CH3COO-)+ C(CH3COOH)+ C(H+) |
C.C(Na+)>C(CH3COO-)> C(OH-)> C(CH3COOH)>C(H+) |
D.C(Na+)+ C(H+)=C(CH3COO-)+ C(OH-) |
A. H2O +H2OH3O+ +OH- | B.HCO3- +OH- H2O +CO32- |
C. CO2 +H2OH2CO3 | D.CO32- +H2OHCO3- +OH- |
A.弱酸性 | B.强酸性 | C.碱性 | D.中性 |
A.呈酸性 | B.呈碱性 | C.呈中性 | D.酸碱性无法判断 |
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