※ 引述《YoAndHide (Ouch￾  ￾椁jjjjjjjjj)》之铭言： : 如果有误请不客气更正,谢谢! : 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 : 这个要怎麽判断阿 这种题型完全没办法T_T : 无法溶於强硷溶液,所以选硷性最强的 周期表愈下面,愈左边硷性愈强 选 a. BeO 另外请问是酸性盐可溶於硷 硷可融於酸是吗? : 我不是很确定,不过应该是 因为酸和酸不反应,硷和硷不反应, 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 依照沉淀表来看 a.难溶 Cl-,Br-,I-与阳离子生成化合物大部分可溶 但与 Ag+,Cu+,Tl+,Pb+,Hg2+2 不溶 (PbCl2只溶於热水) b.可溶 c.难溶 OH-与阳离子形成化合物难溶 只与NH4+,H+,IA+,Sr2+,Ba2+,Ca2+溶 d.难溶 SO42-与阳离子形成化合物大部分可溶 只与Ca2+,Sr2+,Ba2+,Pb2+,Hg2+2溶 e.难溶 S2-与阳离子产生化合物难溶 只与NH4+,H+ ,IA+,ΠA2+可溶 所以选 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 选 c.昇华热的ΔS是最大的, a.fusion熔化由固体变液体ΔS是负值 b.蒸发(由液体变气体)的ΔS < 昇华(固体变气体)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. : 选 b. AgX比AgY易溶於酸,表示AgX的硷性较强,酸性较弱 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- 选 a. 气体->液体 是水合能(本身是负值) ΔH<0 同一族元素里,同样是九个质子吸引十个电子 原子半径愈小(a<b<c<d),电荷愈大,水合能愈大,数值负的愈多 : 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 : 为什麽Co(NH3)6 3+ 是逆磁 而Fe(H2O)6 3+是顺磁呢? : 还有请问rate law的order有可能是负的吗 因为我算一题是-1 .... : 另外请问有人有写C卷的想对答案吗~? 虽然都查过了 还是对一下比较安心 : 谢谢! 其他的我不太会,谢谢 --

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