作者successjyc (没烦恼~~)
看板TransBioChem
标题[化学] 台大91化学C 第9, 10题
时间Mon Apr 27 22:16:32 2009
9. When a skydiver free-falls through the air, the process is
(A) Non-spontaneous because he is accelerating due to the force
applied by gravity
(B) Non-spontaneous because he is losing potential energy
(C) Non-spontaneous because he has planned the jump for two weeks
(D) Spontaneous
我选A 因为会掉下来 是因为有外力作用 对吧??
10. Which of the following has the highest buffered capacity?
(A) 0.1M H2PO4^- / 0.1M HPO4^2-
(B) 0.5M H2PO4^- / 0.1M HPO4^2-
(C) 0.1M H2PO4^- / 0.5M HPO4^2-
(D) 0.5M H2PO4^- / 0.5M HPO4^2-
题目的^- 跟^2- 是价数
我选D 因为 应该是要选1:1 和 莫耳数比较多的 对吗??
请各位高手帮忙确认一下 感激~~
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1F：推 maskedsheep:我也记得是1:1 和莫耳数比较多的 所以也选D 04/27 22:18
2F：→ marton:两题我的答案都跟你一样:) 04/28 00:44
3F：推 rookie1124:第九题 > <，很想选D。如果他没开始跳也不会落下。 05/19 05:02