A.KCl | B.Mg(OH)2 | C.Na2CO3 | D.MgSO4 |
A.[Na+]>[S2-]>[H+]>[HS-]>[OH-] |
B.1/2[Na+]=[S2-]+[HS-]+[H2S] |
C.[Na+]+[H+]=1/2[S2-]+[HS-]+[OH-] |
D.[S2-]+[HS-] +[H2S] =0.05mol/L |
A.NaHCO3 | B.NH4Cl | C.Na2SO4 | D.NaHSO4 |
A.OH-、Na+、K+、HCO3- | B.Na+、HCO3-、Fe3+、Cl- |
C.H+、HS-、Na+、SO32- | D.Al3+、SO42-、CO32-、Cl- |
A.c(H+)<c(OH-)<c(CH3COO-)<c(Na+) |
B.c(H+)<c(OH-)<c(Na+)<c(CH3COO-) |
C.c(H+)<c(CH3COO-)<c(OH-)<c(Na+) |
D.c(OH-)<c(CH3COO-)<c(H+)<c(Na+) |
A.NH4Cl:[Cl-]>[H+]>[NH+4]>[OH-] |
B.Na2CO3:[Na+]>[CO32-]>[HCO3-]>[OH-]>[H+] |
C.NaHCO3:[Na+]>[CO32-]>[HCO3-]>[OH-]>[H+] |
D.(NH4)2SO4:[NH4+]>[SO42-]>[H+]>[OH-] |
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