課程名稱︰普通化學(丙)
課程性質︰系定必修
課程教師︰黃志清
開課學院：生農院
開課系所︰化學系
考試日期（年月日）︰11/7
考試時限（分鐘）：130mins
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
A.Definition and explanation of terms.(50pt.)
(1)Crystallization
(2)Intermolecular attractions
(3)Solvation
(4)Miscible
(5)Conjugate acid-base
(6)Common ion effect
(7)Buffer solution
(8)Acid-Base titration
(9)Light source of UV-Vis absorption spectrometer
(10)Monochromator
(11)Beer's Law and it's limits
(12)Transmittance and absorption
(13)Photomultiplier tube
(14)Atomization
(15)Atomic absorption spectroscopy and Atomic emission spectroscopy
(16)Matrix modifiers in furnace AA
(17)Ultrasonic nebulizer
(18)L'vov plateform
(19)Boltzmann distribution
(20)Zeeman effect
(21)Hollow-cathode lamp
(22)Spectral interference in AA
(23)Chemical interference in AA
(24)Method in standard addition
(25)Ion product
B. Problems(45pt.)
1. Which of the following solutions is unstable?
A) Dilute solution
B) Unsaturated solution
C) Saturater solution
D) Supersaturated solution
2. Crystallization occurs from a(an)_____solution.
A) saturated
B) supersaturated
C) dilute
D) unsaturated
3. The concept like dissolves like is based on _____.
A) surface tension
B) viscosity
C) intermolecular attraction
D) molecular weight
4. Which of the following has very high solubility in water?
A) C6H6
B) C2H5OH
C) C6H5NH2
D) C6H5OH
5. A solution process always ______.
A) decreases enthalpy
B) decreases disorder
C) increases disorder
D) increases enthalpy
6. A solution process will be endothermic if the magnitude of the
intermolecular interaction is in the order_____.
A)solute-solvent>solvent-solvent
B)solute-solvent<solvent-solvent and solute-solute
C)solute-solvent>solvent-solvent and solute-solute
D)solvent-solvent<solute-solute
7. Which one of these statements about strong acids is true?
A.All strong acids have H atoms bonded to electronegative oxygen atoms.
B.Strong acids are 100% ionized in water.
C.The conjugate base of a strong acid is itself a strong base.
D.Strong acids are very concentrated acids.
E.Strong acids produce solutions with a higher pH than weak acids.
8. The pOH of a solution is 9.60 Calculate the hydrogen ion concentration
in this solution.
9. The equilibrium constant for the reaction
C6H5COOH(aq)+CH3COO-(aq)←→C6H5COO-(aq)+CH3COOH(aq)
is 3.6 at 25。C. If Ka for CH3COOH is 1.8*10^(-5),what is the acid
dissociation constant for C6H5COOH?
A.5.0*10^(-6)
B.6.5*10^(-5)
C.2.3*10^(-4)
D.8.3*10^(-5)
E.5.6*10^(-6)
10. For maleic acid, HOOCCH=CHCOOH, Ka1=1.42*10^(-2) and Ka2=8.57*10^(-7)
What is the concentration of maleate ion(-OOCCH=CHCOO-) in a 0.150M
aqueous solution of maleic acid?
A.8.57*10^(-7)M
B.2.79*10^(-6)M
C.1.86*10^(-5)M
D.4.60*10^(-2)M
E.1.19*10^(-1)M
11. Which one of the following combinations cannot function as a buffer
solution?
A. HCN and KCN
B. NH3 and (NH4)2SO4
C. HNO3 and NaNO3
D. HF and NaF
E. HNO2 and NaNO2
12. Calculate the pH of a buffer solution prepared by dissolving 2.0 mole
of cyanic acid (HCNO) and 0.80 mole of sodium cyanate (NaCNO) in enough
water to make 1.0 liter of solutionl.[Ka(HCNO)=2.0*10^(-4)]
A. 0.97
B. 3.10
C. 4.40
D. 3.70
E. 4.30
13. Assuming equal concentrations of conjugate base and acid, which one of
the following mixtures is suitable for making a buffer solution with an
optimum pH of 4.6-4.8?
A. CH3COO2Na/CH3COOH(Ka=1.8*10^(-5))
B. NH3/NH4Cl(Ka=5.6*10^(-10))
C. NaOCl/HOCl(Ka=3.2*10^(-8))
D. NaNO2/HNO2(Ka=4.5*10^(-4))
E. NACl/HCl
14. For which type of titration will the pH be basic at the equivalence
point?
A. Strong acid vs. strong base.
B. Strong acid vs. weak base.
C. Weak acid bs. strong base.
D. all of the these
E. none of these
15. Calculate the minimum concentration of Cr3+ that must be added to 0.095
M NaF in order to initiate a precipitate of chromium(III) fluoride.
(For CrF3, Ksp=6.6*10^(-11).)
A. 0.023M
B. 0.032M
C. 7.7*10^(-8)M
D. 2.9*10^(-9)M
E. 6.9*10^(-10)M
C. Additional problems.
1. Draw the general molecular orbital energy level diagram for H2 and
O2.(10pt.).
2. Draw the scheme of double-beam UV-Vis absorption scanning
Spectroscopy(10pt.).
3. Draw the scheme of flame atomic absorption spectroscopy(10pt.)
4. Draw the scheme of ICP-MS(10pt.).
註：考試可帶計算機、電子辭典，可提早交，可用黑筆、藍筆、鉛筆作答，選擇題不用寫
原因。
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