[試題] 100上 林萬寅 普通化學甲 期末考

[hank0526 (captain america)]

課程名稱︰普通化學甲
課程性質︰必修
課程教師︰林萬寅
開課學院：工學院
開課系所︰化工系
考試日期（年月日）︰2012/1/11
考試時限（分鐘）：120min
是否需發放獎勵金：是
（如未明確表示，則不予發放）

試題 :

1.which if the following processes are spontaneous? 10%
(A)expansion of a gas into vacuum
(B)freezing of hot water at 0度C and 1atm
(C)a rubber band is rapidly extended by a hanging weight
(D)dissolution of solid NACL in its saturated aqueous solution
(E)a glass shatters in the floor

2.predit the sign(>0,=0,<0)of delta S in each of the following processes 10%
(A)adiabatic reversible expansion of a gas
(B)freezing of hot water at 0度C and 1atm
(C)2H(g)→H2(g)
(D)Sio2(s)→Si(s)+O2(g)
(E)mixing of two gases at the same T and P

3.A diathermic contanier 1 mol of Ar (assumed ideal) at 1.0atm is immersed in
a heat bath of 25度C(fig.a)A mass m is placed on top of a moveable piston,exer
ting a pressure of 5.0 atm.after the equilibrium is reached(fig.b),the volume
of the container is fixed and then the temperature of the heat bath is raised
to 75度C(fig.c)answer the following question(Cv==3R/2 for Ar,R=8.314JK-1MOL-1)
(28%)
圖A:在一個熱水浴(25度C)中有一個重物m準備開始壓縮狀態為(1 atm 的Ar)
圖B:Ar被壓縮為5 atm,溫度仍為25度C
圖C:壓縮的之後Ar體積不變,但是溫度上升至75度C

(A)find q,w,delta U,delta S,delta for Ar in the process 圖A→圖B
(B)find delta H,delta S,delta S(surrounding)for Ar in the process 圖B→圖C

4. (12%)
(A)At very high temperature,all types of molecular motions can be actived and
the heat capacity of a molecule reaches a maximum. give the translation,rotat
ional,vibrational contribution to the heat capacity(Cp) of CO2 at a very high
temperature
(B)give the thermodynamic properties that are required to calculate the absolute
entropy of gaseous CO2

5.anwer the following questions for azide ion(N3-)and(N3+)
(A)draw the lewis structure of (N3-) and give the formal charge of each atom
5%
(B)formulate the MO structure for the delocalized π bonds for(N3-) 5%
(C)predict the shape of (N3-) and the hybridization of the central N atom 4%
(D)find the bond order of (N3-)  2%
(E)is (N3+) paramagnetic or diamagnetic? 2%
(F)find the bond order of (N3+)   2%

6.write the structural formula for  the following molecules  (10%)
(A)3-ethly-2,4-dimethylheptane
(B)trans-3,4-dimethyl-3-hexane
(C)5-bromo-3-methyl-2-hexaonl
(D)3,4-dichloro-2-hexnone
(E)ethyl butanoate

7.complete the following rections.The chemical formula of the reactants must
be give in the chemical equations    (10%)
(A)toluene+Cl2(hv)→
(B)benzene+ethyl chloride(AlCl3)→
(C)propene+HBr→
(D)ethanol(加熱,H2SO4)→(intermolecular dehydration)
(E)acetic acid+dimethyl amine→

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