作者icloudy (icloudy)
看板Chemistry
标题[学习] 物理化学的几个问题
时间Mon Apr 17 22:35:59 2017
虽然物理化学很像普通化学的进阶版，但写题目还是困难重重啊~
希望大家不吝赐教，非常非常感谢!!!
第1题 : How many components has a mixture of water and deuterium oxide in whi
ch the equilibrium H2O + D2O->2HDO exists?
(A) 4
(B) 3
(C) 2
(D) 1
这题是有关Phase rule的问题，相律真的好难懂啊啊啊!
Constituents有3个、方程式一个、各项皆为液相不知道要不要算？
第2题：In a condensed system of two-component phase diagram containing solid
and liquid (Salol and Thymol condensed system), a composition containing a% Sa
lol was cooled eventually causing it transforming from a one-liquid phase syst
em into a two-phase system (One pure Thymol solid phase and one liquid phase).
After equilibrium, the composition of this liquid phase was found to contain
b% Salol. Which the following answer is correct to describe the weight ratio o
f solid phase/liquid phase?
(A) (a-b)/a
(B) b/(a-b)
(C) (a-b)/b
(D) a/(b-a)
这题题目有点长，是eutectic mixture的问题，我不管怎麽算都是b-a/a,不知道错在哪里
...
拜托大家了~~
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1F：推 l26873169: 看到这些问题 让大一的我 感到非常沮丧04/18 00:50
※ 编辑: icloudy (180.217.177.223), 04/18/2017 14:12:13
2F：推 him147888: 学店大一还困在滴定 05/09 10:19