[試題] 98上 金必耀 普通化學乙上 期中考

[KenYang0531 (羊咩咩)]

課程名稱︰普通化學乙上
課程性質︰系定必修
課程教師︰金必耀
開課學院：工學院
開課系所︰土木工程學系
考試日期（年月日）︰2009/11/13
考試時限（分鐘）：110 min
是否需發放獎勵金：是，謝謝
（如未明確表示，則不予發放）

試題 :
※原試題中有些錯誤，已直接改正

1.(10%) Name the following compounds:(a)N2O5 (b)S2Cl2 (c)Cr2O3 (d) NaHCO3
  (e)Fe(NO3)3

2.(10%) Polyethylene is built up from a monomer called ethylene. What are the
  molecular formulas for ethylene and polyethylene? Briefly describe the
  reaction mechanism for this polymerization reaction. How are free radicals
  important in the formation of reaction.

3.(10%) Pyridine has the molecular formula C2H5N. When pyridine reacts with O2,
  the products are CO2, H2O, amd N2. Write a balanced equation for this
  reaction.

4.(10%) The chlorophyll molecule responsible for photosynthesis in plants has
  2.72% Mg by mass. There is only one Mg atom per chlorophyll molecule. How can
  you determine the molar mass of chlorophyll based on this information.

5.(10%) If you have 20.0g of iron(II) nitrate that is dissolved to give 2.00L
  of solution, what is the molarity of the solution? What is the molarity of
  nitrate ions?

6.(10%) State, in general terms, under what conditions one may expect the
  diffraction of matter waves to be important in determining the dynamics of a
  particle, and under what conditions diffraction is unimportant.

7.(10%) What is the de broglie wavelength of anoxygen molecule at room
  temperature? Compare this to the average distance between oxygen molecules in
  a gas at 1 bar at room temperature. (h=6.625*10^-34 J*s, R=8.3145 J/mole*K)

8.(10%) Derive the expression for the energy of a particle (mass m) constrained
  in a ring with radius r using the de Brogile formiula. What is the zero_point
  energy for the system, i.e. the energy of the lowest allowed state?

9.(10%) The equation referred to by Debye in response to Schrodinger's lecture
  on de Brogile waves is the classical wave equation. For describing a standing
  wave Ψ(x) in one dimension, it is

       d^2Ψ     4π^2
      ------- + ------- Ψ = 0
       dx^2       λ^2

  where  λ is the wavelength of the standing wave. (For a fixed λ,a solution
  of this equation is the sine wave y=Asin(2px/l).) Show that this equation
  becomes a one-dimensional form of Schrodinger's wave equation.

       -(h-bar)^2   d^2Ψ
      ------------ ------- + VΨ = EΨ
            2m      dx^2

  when the generalized form of the de Brogile wavelength  λ for a particle
  moving in the presence of a potential, V(x), is substituted into the
  classical equation and some algebraic rearrangement is made.

10.(10%) Sketch signed contour plots or boundary surfaces on appropriate axes
   of the following orbitals: 2Pz, 3Pz, 3dz^2, 4dxy, and 5dx^2-y^2. Also write
   down the numbers of radical and angular nodal planes for the corresponding
   orbitals.

P.S.考試時可以問所需的常數
    有部分題目是從考古題和習題直接出出來


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◆ From: 118.168.65.9
※ 編輯: KenYang0531     來自: 118.168.65.9         (11/13 17:40)
推 roytom007   :h上一撇叫h霸
→ yutsao      :         h-bar
※ 編輯: KenYang0531     來自: 118.168.65.9         (11/13 19:12)
→ KenYang0531 :修改啦 一直不知道他叫什麼
推 alextan     :原PO好認真歐~~
推 alex514103  :老師的名字好酷
→ roytom007   :他本人也很酷!
→ KenYang0531 :他家裡有很多蘋果電腦
→ danny1991   :第四題最後面chlorophyll少一個p
※ 編輯: KenYang0531     來自: 118.168.67.103       (11/15 16:38)
→ KenYang0531 :已更正 謝謝