把0.1mol·L -1 HAc溶液20mL和0.1mol·L -1 KAc溶液20mL混合得缓冲溶液,该溶液的pH为( )。(HAc的K a =1.76×10 -5 )
A.
1.76
B.
4.75
C.
5
D.
2
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】单词拼写。根据句意,用括号内所给汉语完成句子。 1. I'm __________ (计划) my vacation to Italy this weekend. 2. Maria is the ___________ (最高的) of all. 3. He always does exercise, so he looks very ___________ (健康). 4. We both ha...
【简答题】根据句意及括号内所给英文或汉语提示,完成句子。 1. —May I _____ (study) Chinese with you? —No problem. 2. Bill wants _____ (visit) the Great Wall tomorrow. 3. The Great Wall is a _____ (伟大的) wonder (奇迹). 4. —Excuse me, could...
【简答题】根据句意用括号内所给汉语提示完成句子。 1. Little Tom always has _______ (奇怪的) ideas in his mind. 2. LiLei is a _______ (勤勉的) student, all the teachers like him very much. 3. Never be _______ (粗鲁的)to the elderly, it's im...
【简答题】根据句意及括号内所给的英文或汉语提示,完成句子 1. __________(that) are oranges. They are his. 2. -What are they ? -They are __________(box). 3. -What are these? -They are __________(十二) books. 4. Those books are in her ____...