9 一藥物含鹼性氨(pKa=9.0),在 pH 7.0 時其離子化百分比約為:
(A) 25%
(B) 50%
(C) 75%
(D)近於 100%
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統計: A(74), B(60), C(70), D(1803), E(0) #413544
統計: A(74), B(60), C(70), D(1803), E(0) #413544
詳解 (共 4 筆)
#893341
If pKa - pH = 0.5, then the solution is 75% ionized/ 25% unionized or |
If pKa - pH > 1 then the solution is 99-100% ionized or 99-100% unionized* |
14
1
#1335182
{10^(9-7)/[1+10^(9-7)]x100%}=99%
9
1
#3977921

因為是鹼性,所以pH=pKa+log[B]/[BH+]
8
0
#5732989
鹼在酸中解離
2
0