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1、國立屏東教育大學96學年度研究所碩士班入學考試化學試題(應用化學暨生命科學系碩士班)※請注意:1.本試題共四頁。2.答案須寫在答案卷,否則不予計分。一、選擇題 (每題4分,共120分)1.SolutionsofBaCl2(aq),Na2SO4(aq)andKNO3(aq)aremixedtogether.Whatcompoundislikelytoprecipitatefromthesolution?(A)NaNO3(B)Ba(NO3)2(C)BaSO4(D)KCl(E)K2SO42.5.02gofanunknowngasissealedina1.0Lflaskat37oCand3.75at
2、m.Whichoneofthefollowingismostlikelytobetheunknown?(A)H2O(B)HBr(C)HCN(D)H2S(E)C2H2(Br=80,N=14,S=32,)3.Anelectroninacertainatomisinthen=2quantumlevel.Whichchoicelistspossiblevaluesofbothlandmlthatitcanhave?(A)l=2.ml=2.(B)l=1.ml=2.(C)l=0.ml=─1.(D)l=0.ml=0.(E)l=2.ml=1.4.Themaximumnumberofelectronsinaa
3、tomwiththefollowingsetofquantumnumbersis:n=4l=+3ml=─2ms=+1/2(A)0(B)1(C)2(D)6(E)105.Whichoftheelementslistedbelowhasthefollowingpatternforitsfirstsixionizationenergies.I1=firstionizationenergy,I2=secondionizationenergy,etc.(A)Ca(B)Si(C)Al(D)Se(E)P6.TheLewisstructureforchlorateion,ClO3─shouldshow____
4、singlebond(s),____doublebond(s),and____lonepair(s).(A)2,1,10(B)3,0,9(C)2,1,8(D)3,0,10(E)2,1,97.Carbon–11isaradioactiveisotopeofcarbon.Itshalf-lifeis20.3minutes.ApproximatelywhatfractionoftheinitialnumberofC–11atomsinasamplewillremainafter81minutes?(A)1/16(B)1/4(C)1/2(D)1/32(E)1/88.Whichresponseincl
5、udesallthemoleculesbelowthatdonotfollowtheoctetrule?(1)H2S(2)BCl3(3)PH3(4)SF4(A)2,4(B)2,3(C)1,2(D)3,4(E)1,4第4頁,共4頁9.加熱碳酸氫鈉時可得到碳酸鈉:2NaHCO3(s)®Na2CO3(s)+CO2(g)+H2O(g)已知此反應之ΔHo=128.9kJ,ΔGo=33.1kJat25oC,請問在標準狀況下,當溫度達到多少時,此反應可自發?(A)0.4K(B)3.9K(C)321K(D)401K(E)525K10.欲配製pH值為4.00±0.02.之醋酸-醋酸鈉緩衝溶液時,其CH3COO
6、H對CH3COONa的莫耳比(molarratio)之值應為若干?(A)0.18(B)0.84(C)1.19(D)5.50(E)0.1011.已知:2SO3(g)→2SO2(g)+O2(g)Kc=2.3´10─72NO3(g)→2NO2(g)+O2(g)Kc=1.4´10─3則下列反應之平衡常數(equilibriumconstant)為何?SO2(g)+NO3(g)→SO3(g)+NO2(g)(A)78(B)1.3´10─2(C)1.6´10─4(D)3.2´10─10(E)6.1´10312.在ClO3─中,中央原子之混成軌域(hybridization)為何?(A)sp(B)sp2(C
7、)sp3(D)sp3d(E)sp3d213.考慮[CoCl6]4─離子,下列敘述何者正確?1.Co的氧化數(oxidationnumber)為-4。2.Co的配位數(coordinationnumber)為+6。3.此離子為順磁性(paramagnetic)4.此離子為低自旋錯離子(low-spincomplex)。(A)1,2,3,4(B)1,4(C)2,3(D)1,3(E)3,414.試求已知有0.007