作者linyoge (邮局~不给你存!)
看板TransBioChem
标题[考题] 中兴普化95(化学.化工组)第27.33题
时间Sun May 27 18:45:14 2007
27.For an electrolytic cell
(A)E is negative and G is positive for the cell reaction.
(B)E is positive and G is positive for the cell reaction.
(C)E is positive and G is negative for the cell reaction.
(D)E is negative and G is negative for the cell reaction.
33.In the first order reaction，A→Products,
the initial concetration of A is 1.56M and 0.896M after 48mins.
What is the half-life of the reaction, in min?
(A)72.8 (B)36.2 (C)56.8 (D)63.9
我先将初浓度1.56和末浓度0.896和时间48min代入ln﹝A﹞=ln﹝A0﹞-kt
求出k之後，在代入t1/2=0.693/k，然後求出来是59.9min，没有答案?
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1F：推 yiso:电解电池不是自发反应 所以G<0 E>0 59.115.226.141 05/27 19:14
2F：→ yiso:第二题算出来 应该是无解 59.115.226.141 05/27 19:14
3F：推 linyoge:不是自发G不是应该大於0? 218.164.34.26 05/27 19:21
4F：推 yiso:囧 手残 写错 ＝ ＝ 59.115.226.141 05/27 19:24
5F：推 linyoge:一直忘了要谢谢你帮我解题^^，祝金榜题名 218.164.25.203 05/31 19:20