Test Bank For Chemical Principles The Quest for Insight 7th Edition By Peter Atkins; Loretta Jones; Leroy Laverman 9781464183959.pdf

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m m m m m m m m m m m m

tion Atkins m




Focus 2: Molecules
m m




1. UsemthemexpressionmformthemCoulombmpotentialmenergymtomcalculatemthemenergymform
formationmof m1mmolemof msodiummchloridemion-
pairs,mthat mis,mthemenergymchangemformthemfollowingmreaction:
Na+(g)m+mCl−(g)m→mNa+Cl−(g)mU
semr12 m =m283mpm.
Ans:m −491mkJmol−1

2. If m491mkJmol−1 m ismreleased minmthemreactionmNa+(g)m+mCl−(g)m→mNa+Cl−(g),mwhat mismthem
energymchangemformthemreactionmNa(g)m+mCl(g)m→mNa+Cl−(g)?m(Hint:mSeemthemdiscussion
minmthemtext mand mapplymHess'smLaw.)

Ans:m −346mkJmol−1

3. If m346mkJmol−1 m ismreleased minmthemreactionmNa(g)m+mCl(g)m→mNa+Cl−(g),mismthemener
gymchangemformthemreactionmNa+Cl−(g)m→mNaCl(s)mendothermicmormexothermic?
Ans:m Exothermic

4. ThemMadelungmconstant mismdifferent mformallmcrystals.mTruemormfals
e?mAns:m True

5. UsemthemexpressionmformthemCoulombmpotentialmenergymtomcalculatemthemenergymformfo
rmationmof m1mmolemof mrubidiummchloridemion-
pairs,mthat mis,mthemenergymchangemformthemfollowingmreaction:
Rb+(g)m+mCl−(g)m→mRb+Cl−(g)mU
semr12 m =m330mpm.
Ans:m −421mkJmol−1

6. Whichmof mthemfollowingmhasmthemlowest mlatticemenergy?
A) KCl B)m LiCl C)m KBr D)m NaCl E)m KI
Ans:m E

7. Whichmof mthemfollowingmhasmthemhighest mlatticemenergy?
A) NaCl B)m KI C)m MgO D)m BaO E)m CaO
Ans:m C

8. Whichmof mthemfollowingmhasmthemhighest mmeltingmpoint?
A) KF B)m KI C)m RbF D)m KBr E)m KCl
Ans:m A




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m m m m m m m m m m m m

ion Atkins m
Chapterm3:mChemicalmBonds


9. Metalsmrarelymlosemelectronsminmchemicalmreactions mbecause
A) theirmelectronmaffinitiesmaremtoomhigh. D) theirmsizemismtoomsmall.
B) theirmionicmradiimbecomemtoomsmall. E) theirmionizationmenergiesmaremtoomhigh.
C) theirmionizationmenergiesmaremto
omsmall.
Ans:m E

10. Anmelement,mE,mhasmthemelectronicmconfigurationm[Ne]m3s2 3p1 .mWritemthemformulamof m
itsmcompound mwithmsulfate.
Ans:m E2 (SO4 )3

11. Predict mthemelectronicmconfigurationminmthemoxidemionminmCaO.
A) [He]2s2 2p6 morm[Ne] D) [Ne]3s1 3p3
B) [He]2s 2p 2 5 E) [Ne]3s2 3p3
C) [He]2s2 2p6 3s2
Ans:m A

12. Writemthemformulamof mmagnesiummphosphide
.mAns.m Mg3 P2

13. Whichmof mthemfollowingmmetalmionsmhasmthemground-statemelectronmconfigurationm[Ar]3d 6 ?
A) Ni3+ B)m Fe2+ C)m Mn2+ D)m Cu+ E)m Ca2+
Ans:m B

14. Formthemground-
statemionmPb2+,mwhat mtypemof morbitalmdomthemelectronsmwithmhighest menergymresidemin?
A) 6p B)m 5p C)m 4f D)m 6s E)m 5d
Ans:m D

15. Formthemground-
statemionmSn4+,mwhat mtypemof morbitalmdomthemelectronsmwithmhighest menergymresidemin?
A) 4p B)m 5p C)m 4f D)m 4d E)m 5s
Ans:m D

16. Formthemground-
statemionmBi3+,mwhat mtypemof morbitalmdomthemelectronsmwithmhighest menergymresidemin?
A) 5d B)m 6s C)m 4f D)m 5p E)m 6p
Ans:m B

17. Formthemground-
statemionmI −,mwhat mtypemof morbitalmdomthemelectronsmwithmhighest menergymresidemin?
A) 4d B)m 6s C)m 5p D)m 5d E)m 5s
Ans:m C




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m m m m m m m m m m m m

ion Atkins m
Chapterm3:mChemicalmBonds


18. Becausemof mthemoctet mrule,mthemgaseousmO2−m ionmismstable.m Truemormfals
e?mAns:m False

19. Allmthemfollowingmelementsmexist masmdiatomicmgasesmat mroommtemperaturemand matmospher
icmpressuremexcept
A) H. B)m Ar. C)m N. D)m Cl. E)m O.
Ans:m B

20. How mmanymlonempairsmof melectronsmaremfound minmthemLewismstructuremof mtheminterhalog
enmcompound mICl3 ?
A) 10 B)m 4 C)m 8 D)m 6 E)m 7
Ans:m A

21. How mmanymlonempairsmof melectronsmaremfound minmthemLewismstructuremof murea,m(NH 2 )2 CO?
A) 2 B)m 3 C)m 6 D)m 4 E)m 8
Ans:m D

22. How mmanymlonempairsmof melectronsmaremfound minmthemLewismstructuremof mhydrazi
ne,mH 2 NNH2 ?
A) 8 B)m 4 C)m 1 D)m 0 E)m 2
Ans:m E

23. Draw mthemLewismstructuremof mxenonmdifluoridemand mgivemthemnumbermof mlonempa
irsmelectronsmaround mthemcentralmatom.
Ans:m Three

24. Draw mthemLewismstructuremof mthemformatemionmand mindicatemwhethermresonancemformsm
arempossible.
Ans:m Twomresonancemformsmarempossible.

25. Draw mthem“best”mLewismstructuresmof mhydrogenmazide,mHN1 N 2 N 3 ,mand mthemazidemion,
N1mmNmm2Nm m−m .m Themsubscriptsmaremused mformidentification.mFormeach,mmatchmthemfollowingm
m3
bond mlengthsmtomthemcorrect mN–

N mbond.mThembond mlengthsmcanmbemused mmoremthanmonce.
N–Nmbond
Bond mlength,mpmmhydrogenmazid
e N 1 –N 2 113
N 2 –N 3 116
azidemion N 1 –N 2 124
N 2 –N 3
Ans:m hydrogenmazide:mN1 –N2 ,m124mpm;mN2 –N3 ,m113mpm;mazidemion:mN1 –
N2 ,m116mpm;mN2 –mN 3 ,m116mpm

26. Whichmof mthemfollowingmdomnot mhavemresonancemstructures?
A) CH3 CONH − B)mCH 2 COCH 3 − C)mH2 CO
D)m Allmhavemresonancemstructures.mAns:m C


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