課程名稱︰普通化學乙下
課程性質︰系訂選必修
課程教師︰簡淑華
開課學院：生農學院
開課系所︰森林環資系
考試日期（年月日）︰2007/6/20
考試時限（分鐘）：兩節課
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
1.Briefly explain or distinguish the following terms:
(1)metal activity series
(2)sacrificial anode
(3)Pilling-Bedworth (P-B) ratio
(4)coordinate-covalent bond
(5)transition metal complex
(6)ligand
(7)spectrochemical series
(8)high spin complex and weak field ligand
(9)catalyst and catalysis
2.Provide chemical formulas for the following materials
(1)methanol(2)ethane(3)ethylene(4)acetic acid(5)ethylenediamine(en)
3.Consider a galvanic cell constructed with a copper strip in a solution of
Cu2+ (aq) ions and a zinc strip in a solution of Zn2+ (aq) ions.
(1)which metal is oxidized
(2)which metal is anode and which is cathode
(3)draw a schematic picture of this cell indicating electron flow
(4)write the two half-reaciton and the overall reaction for this galvanic
cell
(5)write the cell notation for this galvanic cell
(6)Given the standard reduction potentials at 25℃ for Cu2+/Cu and Zn2+/Zn
are +0.3402V and -0.7628V, respectively, determine the standard
potential of this cell and the Gibbs free energy for the reaction
(7)At room temperature, what is the relationship between the zinc and
copper ion concentrations at equilibrium
(8)write the Nernst equation. Use the equation to determine the ratio
[Zn2+]/[Cu2+] in the cell which produces 0.670V
4.Answer the following question:
(1)How many unpaired electrons are present in (a)[Fe(H2O)6]2+
(b)[Fe(CO)6]2+ (c)[Fe(CO)6]3+
Give your reason and specify the magnetic property for the complexes
(2)which three elements and one metal oxide that are ferromagnetic at room
temperature
(3)Compare the d-orbital energy-level diagram for a metal ion in an
octahedral, a tetrahedral and a square planar complex
(4)what are the coordination number for a metal ion in an octahedral, a
tetrahedral and a square planar complex
(5)Ruby is composed of an Al2O3 solid, called corundum, with a small
concentration, 0.5％, of Cr3+ ions. The red color is due to the Cr3+ ions
what color is absorbed Use the d-orbital energy-level diagram for Cr3+
ions to explain the phenomenon
(6)Explain why the color of [CoCl6]4- is purple,[Co(H2O)6]2+ is pale red,
[Co(NH3)6]2+ is yellow orange
(7)one therapy for lead poisoning is to administer EDTA as a chelating agent
What is the charge on the lead-EDTA complex What is the coordination
number of lead in the complex is it soluble in aqueous solution
(8)The radioactive isotope 14C is used for dating ancient artifacts The
first-order decay constant for 14C is 1.21*10^(-4) yr(-1). what is the
half-life of this reaction
(9)deduce an equation to show what the half-life of a second-order reaction
depends on the initial concentration, the larger the initial concentration
, the shorter the half-life
(10)what is the Arrhenius Equation ? The rate of a process is found to be
twice as fast at 300K as at 290K What is the activation energy of
the process
(11)Azomethane decomposes according to the reaction stoichimetry
CH3NNCH3(g)→CH3CH3(g)+N2(g)
write the reaction mechanism to explain the decomposition is first-order
reaction at high pressure and a second-order reaction at low pressure
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