[考題] 中興普化95(化學.化工組)第27.33題

[linyoge (郵局~不給你存!)]

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

我先將初濃度1.56和末濃度0.896和時間48min代入ln﹝A﹞=ln﹝A0﹞-kt

求出k之後，在代入t1/2=0.693/k，然後求出來是59.9min，沒有答案?



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推 yiso:電解電池不是自發反應 所以G<0 E>0
→ yiso:第二題算出來 應該是無解
推 linyoge:不是自發G不是應該大於0?
推 yiso:囧 手殘 寫錯 ＝ ＝
推 linyoge:一直忘了要謝謝你幫我解題^^，祝金榜題名