[化學] 99&98中興化學問題

看板TransBioChem作者hilde (小葛撫慰我的心)時間13年前 (2011/07/10 08:40)推噓4(4推 0噓 5→)

留言9則, 5人參與討論串1/2 (看更多)

98.1&2 前面有大大提供的解答可是跟我拿到的答案不一樣所以想上來請教一下大家的想法我覺得有疑惑的地方是第一題的C選項 A既然是等溫過程怎麼會有溫度下降的比較? 第二題我自己也是選B 可是我拿到的答案是A 他的說法是k=Ae^-Ea/RT 所以溫度增加反應速率也增加所以大家都選什麼?? 99.10 Which of the following statements is wrong? (a)When a balanced chemical equation is multiplied by a constant factor, the corresponding equilibrium constant is raised to a power equal to that factor. (b)The absolute value of entropy can be obtained. (c)S=0 at 0K for any pure crystalline substance. (d)The relationship between deltaG and equilibrium constant K is linked by a function of "ln". (e)以上皆正確這題我是選E,但是答案是A.... 在我普化課本上說一個平衡方程式乘以n之後,K值會變成K的n次方. 然後解答的說法是 K只受溫度影響= = 99.26 以下哪個說法為正確 (a)Raoult's law describes that a volatile solute lower the vapor pressure of a solvent. (b)The total vapor pressure of a solution is equal to the pressure of solvent. (c)The freezing point of NaCl(aq) is 0度C. (d)The addition of antifreeze into water for use in a car'a radiator is the application of boiling point elevation. (e)滲透壓跟溶解度有關. 最奇妙的是答案為A可是跟98年的19題剛好矛盾(去年這題這選項是錯的) 而且我也不知道要選哪個才好,看起來每個都錯= = 請大家救救我.... 感恩! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 59.115.145.1 ※ 編輯: hilde 來自: 59.115.145.13 (07/10 08:45)

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