※ 引述《YoAndHide (Ouch￾  ￾椁jjjjjjjjj)》之銘言： : 如果有誤請不客氣更正,謝謝! : 94 : 2. Pure rotational of a molecule occur in what region of electromagnetic : radiation? a.microwave b. x-ray c. infrared d. ultraviolet e. r-ray : 6. Which one of the following compounds is not soluble in a strong basic : solution? a. BeO b. ZnO c. Al2O3 d. Fe2O3 e. Cr2O3 : 這個要怎麼判斷阿 這種題型完全沒辦法T_T : 無法溶於強鹼溶液,所以選鹼性最強的 週期表愈下面,愈左邊鹼性愈強 選 a. BeO 另外請問是酸性鹽可溶於鹼 鹼可融於酸是嗎? : 我不是很確定,不過應該是 因為酸和酸不反應,鹼和鹼不反應, 7. Which one of the following compounds is most soluble in water? : a. PbCl2 b. Pb(ClO4)2 c.Pb(OH)2 d.PbSO4 e. PbS 依照沉澱表來看 a.難溶 Cl-,Br-,I-與陽離子生成化合物大部分可溶 但與 Ag+,Cu+,Tl+,Pb+,Hg2+2 不溶 (PbCl2只溶於熱水) b.可溶 c.難溶 OH-與陽離子形成化合物難溶 只與NH4+,H+,IA+,Sr2+,Ba2+,Ca2+溶 d.難溶 SO42-與陽離子形成化合物大部分可溶 只與Ca2+,Sr2+,Ba2+,Pb2+,Hg2+2溶 e.難溶 S2-與陽離子產生化合物難溶 只與NH4+,H+ ,IA+,ΠA2+可溶 所以選 b. : 12.Which one of the following quantities is largest for 1mol of given subtance : a. enthalpy of fusion b.enthalpy of vaporization c.enthalpy of sublimation : d. heat capacity of solid e. heat capacity of liqid : ΔS=ΔH/T ΔS愈大,ΔH就愈大 選 c.昇華熱的ΔS是最大的, a.fusion熔化由固體變液體ΔS是負值 b.蒸發(由液體變氣體)的ΔS < 昇華(固體變氣體)的ΔS 二 : 3 A 0.02M solution of H2SO4 has an osmotic pressure of 1.125 atm at 25度C : Find Ka for HSO4- : 8.Represent the structure of the condensation polymer made from : 2-hydroxypropanoic acid : 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. : 選 b. AgX比AgY易溶於酸,表示AgX的鹼性較強,酸性較弱 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- 選 a. 氣體->液體 是水合能(本身是負值) ΔH<0 同一族元素裡,同樣是九個質子吸引十個電子 原子半徑愈小(a<b<c<d),電荷愈大,水合能愈大,數值負的愈多 : 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 : 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! 其他的我不太會,謝謝 --

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