作者ghost1127tw (kenesia bekele)
看板Chemistry
标题[高中] 高中或普化等级问题
时间Sun Oct 13 19:34:41 2019
4. When the adhesive forces between a liquid and the walls of a capillary
tube are greater than the cohesive forces within the liquid
(A) the liquid level in a capillary tube will rise above the surrounding
liquid and the surface in the capillary tube will have a convex meniscus
(B) the liquid level in a capillary tube will rise above the surrounding
liquid and the surface in the capillary tube will have a concave meniscus
(C) the liquid level in a capillary tube will drop below the surrounding
liquid and the surface in the capillary tube will have a convex meniscus
(D) the liquid level in a capillary tube will drop below the surrounding
liquid and the surface in the capillary tube will have a concave meniscus
答案给B
我觉得是D 有没有化学相关的可以帮忙
--
※ 发信站: 批踢踢实业坊(ptt.cc), 来自: 36.236.58.109 (台湾)
※ 文章网址: https://webptt.com/cn.aspx?n=bbs/Chemistry/M.1570966483.A.8F7.html
1F：→ losermi: 吸附力>内聚力 （ex 水） 10/14 07:38
2F：→ losermi: 液体表层呈现下凹，表面张力有朝上分量，毛细管液体高度 10/14 07:38
3F：→ losermi: 会比周围高，所以选B 10/14 07:38