25℃，a L 0.1000mol/L CH3COOH溶液与b L 0.1000 mol/L NaOH溶液混合，下列说法正确的是（）

题干

25℃，a L 0.1000mol/L CH₃COOH溶液与b L 0.1000 mol/L NaOH溶液混合，下列说法正确的是（）

A：若a＞b，则pH一定小于7

B：若a＜b，则一定存在：n(OH^－)－n(H^＋)＞0.1(b－a)

C：c(Na^＋)＞c(CH₃COO^－)＞c(OH^－)＞c(H^＋)，则a≤

D：若pH＝7，则a＞b，且c(Na^＋)＝c(CH₃COO^－)＋c(CH₃COOH)

上一题下一题 0.0难度选择题更新时间:2013-12-18 01:12:36

答案(点此获取答案解析）

B

同类题5

阅读理解

The following ads are from Shenzhen Daily to help you to choose the activities that will be held during the summer holidays in England. Please sign up and join us.

	The Postal Museum Date: July 17-23 Age: 11-13 Would you like to join us this summer vacation? You can create a stamp with your own design, write and mail a postcard, and learn about the history of stamps. Tel: 965-0400
	The Air and Space Museum Date: July 29-30 Age: 8-11 If you enjoy programs about air and space, please come here, it's a good place to make and fly your own paper airplane, watch an IMAX movie, and climb into a real airplane. Tel: 654-0930
	The Science Museum Date: August 7-20 Age: 9-12 You can experience video arts and computer technology, play VR games to explore a funny city, and ask the robots questions about science. It will be wonderful! Have fun! Tel: 357-3030
	The Building Museum Date: August 21-27 Age: 13-15 Want to enjoy design challenges? Come and join us. You can also go on field trips to some famous buildings, and build small houses with soft blocks. All the programs are free. Tel: 272-0560

题干

答案(点此获取答案解析）

同类题1

同类题2

同类题3

同类题4

同类题5