A . 6
B . 5
C . 4
D . 3
E . 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]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]某弱酸性药物在pH=7.0溶液中解离90%,问其pKa值约为( )。A.5B.6C.7D.8E.9
[单选题,A型题] 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
[单选题,A1型题] 某弱酸性药物在pH7.0溶液中90%解离,其pKa值约为:A .6B .5C .8D .7E .9
[单选题]某弱酸性药物在pH=7.0的溶液中90%解离,其pKa值约为( )。A.6B.5C.7D.8E.9
[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