A. c(Na+) + c(H+) = c(CH3COO-)+ c(OH-) |
B. c(Na+) >c(CH3COO->c (OH-)>c(H+) |
C. c(CH3COO- )+ c(CH3COOH)=" 0.1" mol/L |
D. c(Na+)>c(CH3COO--)>c (H+)>c(OH-) |
A.Cu2+、Na+、SO42-、Cl- | B.K+、Na+、HCO3-、NO3- |
C.OH-、HCO3-、Ca2+、Na+ | D.Ba2+、Na+、Cl-、NO3- |
A.Al3+ NH4+ SO42-CI- | B.Na+Mg2+ HCO3- NO3- |
C.K+ Na+ AlO2-Cl- | D.Fe2+K+NO3-Cl- |
A.铁和盐酸:Fe+2H+====Fe3++H2↑ |
B.石灰石和硝酸:+2H+====H2O+CO2↑ |
C.铜和硝酸银溶液:Cu+Ag+====Cu2++Ag |
D.氢氧化钡溶液和硫酸钠:Ba2++====BaSO4↓ |
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