作者linyoge (郵局~不給你存!)
看板TransBioChem
標題[考題] 中興普化95(化學.化工組)第27.33題
時間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?
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 218.164.34.26
1F：推 yiso:電解電池不是自發反應 所以G<0 E>0 59.115.226.141 05/27 19:14
2F：→ yiso:第二題算出來 應該是無解 59.115.226.141 05/27 19:14
3F：推 linyoge:不是自發G不是應該大於0? 218.164.34.26 05/27 19:21
4F：推 yiso:囧 手殘 寫錯 ＝ ＝ 59.115.226.141 05/27 19:24
5F：推 linyoge:一直忘了要謝謝你幫我解題^^，祝金榜題名 218.164.25.203 05/31 19:20