A.若PH>7时,则一定是c1V1=c2V2 |
B.在任何情况下都是c(Na+)+c(H+)=c(CH3COO-)+c(OH-) |
C.当pH=7时,若V1=V2,则一定是c2>c1 |
D.若V1=V2、c1=c2,则c(CH3COO-)+c(CH3COOH)=c(Na+) |
A.4 | B.1 | C.10 | D.3.3 |
A.c (CH3COO-)>c (Na+) |
B.c (CH3COOH)+c (CH3COO-)=0.02mol/L |
C.c (CH3COOH)>c (CH3COO-) |
D.c (OH-)>c (H+) |
A.3种溶液中pH最小的是① | ||
B.②和③溶液中所含微粒种类相同 | ||
C.3种溶液中c(CH3COO-)大小顺序是③>②>① | ||
D.向②中加少量的CH3COONa固体则
|
A.加90mL水稀释 |
B.加100mLpH=3的H2SO4溶液 |
C.加10mL0.01mol/LNaCl溶液 |
D.加45mL0.01mol/LNaOH溶液 |
A.等于7 | B.大于7 | C.小于7 | D.无法判断 |
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