A.PH相等的①CH3COONa②C6H5ONa③NaHCO3溶液中,C(Na+)大小关系:①>③>② |
B.向氨水中滴加稀硫酸至溶液呈中性:C(NH4+)>C(SO42-)>C(OH-)=C(H+) |
C.向1L 0.1mol/L的NaOH溶液中通入6.6gCO2:2C(Na+)=3[C(CO32-)+C(HCO3-)+C(H2CO3)] |
D.CH3COONa溶液中加入少量KNO3后的碱性溶液一定有:C(Na+)+C(H+)=C(CH3COO-)+C(OH-) |
A. | B. | C.1s22s22p6 | D.K+ |
A.c(OH一)>c(H+)时,a=b | B.c(K+)>c(CH3COO—)时,a>b |
C.c(OH一)=c(H+)时,a>b | D.c(K+)<c(CH3COO—)时,a<b |
A.1:9 | B.1:1 | C.2:9 | D.1:2 |
A.pH<7的溶液 | B.c(H+)>c(OH—) 的溶液 |
C.pH>7的溶液 | D.c(H+)<c(OH—) 的溶液 |
A.NH4Cl | B.NaOH | C.NaCl | D.H2SO4 |
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