A.6
B.5
C.4
D.3
E.2
[单选题]某弱酸性药在pH为5时约90%解离,其pKa为()A . 6B . 5C . 4D . 3E . 2
[单选题]某弱酸性药在pH为5时约90%解离,其pKa为()A.6B.5C.4D.3E.2
[单选题,A型题] 某弱酸性药在pH为5时约90%解离,其pKa值为()A .6B .5C .4D .3E .2
[单选题,A型题] 某弱酸性药在pH为4.5时约90%解离,其pKa为()A .6B .5C .4D .3E .2
[单选题]某一弱酸性药物在pH为7时约90%解离,其pKa值为()A . 6B . 5C . 4D . 3E . 2
[单选题,A型题] 某弱酸性药pKa为3.4,在pH1.4的胃液中其解离度约为()A .O.0001B .0.001C .0.01D .0.1E .0.5
[单选题,A型题] 某弱酸性药pKa为4.4,在pH1.4的胃液中其解离度约为()A .0.5B .0.1C .0.01D .0.001E .0.0001
[单选题,A2型题,A1/A2型题] 某弱酸性药物在pH=7.0的溶液中90%解离,其pKa约为()A . 6B . 5C . 7D . 8E . 9
[单选题,A型题] 某pKa为4.4的弱酸性药,在pH1.4的胃液中其解离度约为()A .0.5B .0.1C .0.01D .0.001E .0.0001
[单选题]某弱酸性药物在pH=7.0溶液中解离90%,问其pKa值约为( )。A.5B.6C.7D.8E.9