※ 引述《YoAndHide (Ouch￾  ￾椁jjjjjjjjj)》之銘言： : 先謝謝願意看我問題的同學!!~ << 恕刪 >> : 二 : 3 A 0.02M solution of H2SO4 has an osmotic pressure of 1.125 atm at 25度C : Find Ka for HSO4- π = (iC)RT , 粒子濃度約 i = π/(CRT) H2SO4 因為強酸, 第一段幾乎全部解離 HA- --> H+ + A2- 1 1 0 -α α α ====================== 1-α 1+α α , 總粒子數 i = 2 + α , α = 0.302 Ka = [H+][A2-]/[HA-] = C(1+α)α/(1-α) = 1.1 * 10^-2 感謝 yiso 版友指正 : 8.Represent the structure of the condensation polymer made from : 2-hydroxypropanoic acid C O OH | ║ | ----> -(-O-C-C-)- C-C-COOH n : 95. : 9. The two salts AgX have very silmilar solubilities in water. : The salt AgX is much more soluble in acid than is AgY : What can be said about the relative strengths of the acids HX and HY? : a. nothing b. HY is strongerthan HX c. HX is stronger then HY : d. The acids have equal strengths. AgX is much more soluble in acid , 可能因為比較 basic 若 X- 比 Y- basic , HY 就會比 HX 還要 acid : 18. For the process X-(g) -> X-(aq) select the ion with the most negative : value of deltaH : a. F- b. Cl- c. Br- d. I- e.At- 水合能最大, 選電荷密度最高者(?) , F- : 19. The color of a transition metal complex results from : a. bending vibrations b.stretching vibrations c.transition of an electron : between d orbitals : d. transition of an electron between an s and a p orbital : e. nuclear magnetic resonance Transition of an electrons between d orbitals, 參考錯合物化學 : 二-4 : 為什麼Co(NH3)6 3+ 是逆磁 而Fe(H2O)6 3+是順磁呢? : 還有請問rate law的order有可能是負的嗎 因為我算一題是-1 .... : 另外請問有人有寫C卷的想對答案嗎~? 雖然都查過了 還是對一下比較安心 : 謝謝! Co(NH3)6 3+ , 金屬離子為 Co3+ , 組態 [Ar]d^6 Fe(H2O)6 3+ , 金屬離子為 Fe3+ , 組態 [Ar]d^5 都是過渡元素第三週期, 然而 NH3 為強配位子 > H2O 因此填入電子的時候 ↑ ↑ Co3+ ￣￣ ￣￣ Fe3+ ￣￣ ￣￣ ↑↓ ↑↓ ↑↓ ↑ ↑ ↑ ￣￣ ￣￣ ￣￣ ￣￣ ￣￣ ￣￣ 有non pair電子存在, 因此為 paramagnetic -- 僅供參考 -- --

※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 125.232.11.236 ※ 編輯: pcboy0831 來自: 125.232.2.85 (07/13 17:00)