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AI骆骆呀

新虫 (小有名气)

[求助] 物理化学 一道题 请各位大佬解下 不胜感激 已有1人参与

9. 在293K时,从一组成为NH3·19/2 H2O的大量溶液中取出1molNH3往另一组成为NH3·21H2O的溶液中转移,此过程的Δμ的表达式为:  (     )               
A.Δμ=RTln(2/19)                B.Δμ=RTln(1/22)
C.Δμ=RTln(21/44)               D.Δμ=RTln(44/21)

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wangth0921

铁虫 (职业作家)

【答案】应助回帖

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感谢参与,应助指数 +1
AI骆骆呀: 金币+5, ★★★★★最佳答案, 太感谢啦~🙈 2020-05-21 19:14:20
1 mol NH3 的化学势:初始化学势 = 标准 + RTln(x) ~ 标准 + RT(1/10.5)  
转移后化学势 = 标准 + RTln(1/22)
变化 = RTln(10.5/22) = RTln(21/44)
答案:(C)
2楼2020-05-14 22:31:11
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