STRAIGHTERLINE CHEMISTRY FINAL EXAM VERSIONS 1 & 2 LATEST WITH 750 QUESTIONS AND CORRECT VERIFIED ANSWERS STRAIGHTERLINE CHEMISTRY FINAL LATEST 2024 (NEW!!)

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g g g g


Correct Answers 2023
g g g



Angendothermicgreactiongcausesgthegsurroundingsgto:
A.gwarmgup
B.gbecomegacidic
C.gcondense
D.gdecreasegingtemperature
E.greleasegCO2g-gCorrectgAnswer-D

Angexothermicgreactiongcausesgthegsurroundingsgto:
A.gwarmgup
B.gbecomegacidic
C.gexpand
D.gdecreasegitsgtemperature
E.greleasegCO2g-gCorrectgAnswer-A

Coppergmetalghasgagspecificgheatgofg0.385gJ/g•oCgandghasgagmeltinggpointgofg1083oC.
gcalculategthegamountgofgheatgrequiredgtograisegthegtemperaturegofg22.8gggofgCugfromg20
.0oCgtog875oC.
A.g1.97g10g─g5gJg
B.g1.0g10g─g2gJ
C.g329gJ
D.g7.51gkJ
E.g10.5gkJg-gCorrectgAnswer-D

Calculategthegamountgofgheatgnecessarygtograisegthegtemperaturegofg12.0gkggofgwatergfr
omg15.4oCgtog93.0oC.
A.g0.027gkJgB.g324gkJgC.g389gkJgD.g931gkJg
E.g3890gkJg-gCorrectgAnswer-E

Howgmuchgheatgisgrequiredgtograisegthegtemperaturegofg1500gggofgwatergfromg25oCg
gtog52oC?
A.g1500gkJgB.g169gkJgC.g6.27gkJgD.g40.5gJgE.g40.5gkJg-gCorrectgAnswer-B

Howgmanygdegreesgofgtemperaturegrisegwillgoccurgwhengag25.0gggblockgofgaluminumgab
sorbsg10gkJgofgheat?gThegspecificgheatgofgAlgisg0.900gJ/g•oC.
A.g0.44oCgB.g22.5oCgC.g225oCgD.g360oCgE.g444oCg-gCorrectgAnswer-E

Ifg325gggofgwatergatg4.2oCgabsorbsg12.28gkJ,gthengwhatgisgthegfinalgtemperaturegofgtheg
water?
A.g4.21oCgB.g4.8oCgC.g9.0oCgD.g13.2oCgE.g2938oCg-gCorrectgAnswer-D

,Agglassgcontainingg200gggofgH2Ogatg20oCgwasgplacedgintogagrefrigerator.gThegwaterglos
esg11.7gkJgasgitgcoolsgtogagconstantgtemperature.gWhatgisgitsgnewgtemperature?
A.g0.013oCgB.g4oCgC.g6oCgD.g14oCgE.g34oCg-gCorrectgAnswer-C

Agpiecegofgcoppergwithgagmassgofg218ggghasgagheatgcapacitygofg83.9gJ/oC.gWhatgisgtheg
specificgheatgofgcopper?
A.g0.385gJ/g•oCgB.g1.83g´g104gJ/g•oCgC.g2.60gJ/g•oCgD.g1.32gJ/g•oCg
E.g24.5gJ/g•oCg-gCorrectgAnswer-A

Thegspecificgheatgofggoldgisg0.129gJ/g•oC.gWhatgisgthegmolargheatgcapacitygofggoldg(unitg
isgJ/mol•oC)?
A.g0.039gJ/mol•oC
B.g0.129gJ/mol•oC
C.g25.4gJ/mol•oC
D.g39.0gkJ/mol•oC
E.g197gJ/mol•oCg-gCorrectgAnswer-C

Wheng0.7521gggofgbenzoicgacidgwasgburnedgingagcalorimetergcontainingg1000gggofgwate
r,gagtemperaturegrisegofg3.60oCgwasgobserved.gWhatgisgthegheatgcapacitygofgthegbombgc
alorimeter,gexcludinggwater?gThegheatgofgcombustiongofgbenzoicgacidgisg─26.42gkJ/g.
A.g15.87gkJ/oC
B.g4.18gkJ/oC
C.g5.52gkJ/oC
D.g1.34gkJ/oC
E.g752.1gkJ/oCg-gCorrectgAnswer-D

Naphthalenegcombustiongcangbegusedgtogdeterminegthegheatgcapacitygofgagbombgcalori
meter.gThegheatgofgcombustiongofgnaphthalenegisg40.1gkJ/g.gWheng0.8210gggofgnaphtha
lenegwasgcombustedgingagcalorimetergcontainingg1000gggofgwatergagtemperaturegrisegofg
4.21oCgwasgobserved.gWhatgisgthegheatgcapacitygofgthegbombgcalorimetergexcludinggthe
gwater?
A.g32.9gkJ/oC
B.g7.8gkJ/oC
C.g1.76gkJ/oC
D.g1.76gkJ/oC
E.g15.3gkJ/oCg-gCorrectgAnswer-C

Whichgofgthegfollowinggprocessesgisgendothermic?
a.gO2(g)g+g2H2(g)g2H2O(g)g
b.gH2O(g)gH2O(l)
c.g3O2(g)g+g2CH3OH(g)g2CO2(g)g+g2H2O(g)g
d.gH2O(s)gH2O(l)g-gCorrectgAnswer-D

Ag100gmLgsamplegofg0.200gMgaqueousghydrochloricgacidgisgaddedgtog100gmLgofg0.200g
Mgaqueousgammoniagingagcalorimetergwhosegheatgcapacitygisg480gJgKg─g1.gThegfollowin
ggreactiongoccursgwhengthegtwogsolutionsgaregmixed.g

,HCl(aq)g+gNH3(aq)gNH4Cl(aq)
Thegtemperaturegincreasegisg2.34oC.gCalculategΔHgpergmolegofgHClgneutralized.g
A.g154gkJgB.g44.5gkJgC.g22.5gkJgD.g─22.5gkJgE.g─56.2gkJg-gCorrectgAnswer-E

Ag0.1326gggsamplegofgmagnesiumgwasgburnedgingangoxygengbombgcalorimeter.gThegHt
otalgheatgcapacitygofgthegcalorimetergplusgwatergwasg5760gJ/oC.gIfgthegtemperaturegriseg
ofgthegcalorimetergwithgwatergwasg0.570oC,gcalculategthegenthalpygofgcombustiongofgma
gnesium.
Mg(s)g+g1/2O2(g)gMgO(s)g
A.g─3280gkJ/molgB.g─24.8gkJ/molgC.g435gkJ/molg
D.g106gkJ/molgE.g─602gkJ/molg-gCorrectgAnswer-E

Whichgonegofgthegfollowinggreactionsgoccurringgatg25oCgdoesgthegsymbolgΔHof[H2SO4(l
)]grefergto?
A.g2H(g)g+gS(g)g+g4O(g)gH2SO4(l)
B.gH2(g)g+gS(g)g+g2O2(g)gH2SO4(l)
C.gH2SO4(l)gH2(g)g+gS(s)g+g2O2(g)
D.gH2SO4(l)g2H(g)g+gS(s)g+g4O(g)
E.gH2(g)g+gS(s)g+g2O2(g)gH2SO4(l)g-gCorrectgAnswer-E

Whichgonegofgthegfollowinggreactionsgoccurringgatg25oCgdoesgthegsymbolgΔHof[HNO3(l)
]grefergto?
A.gH(g)g+gN(g)g+gO3(g)gHNO3(l)
B.g1/2H2(g)g+g1/2N2(g)g+g3/2O2(g)gHNO3(l)
C.gHNO3(l)g1/2H2(g)g+g1/2N2(g)g+g3/2O2(g)g
D.gHNO3(l)gH(g)g+gN(g)g+g3O(g)g
E.gH2(g)g+gN2(g)g+gO3(g)gHNO3(l)g-gCorrectgAnswer-B

Wheng0.56gggofgNa(s)greactgwithgexcessgF2(g)gtogformgNaF(s)gatgstandardgstategconditio
ns,g13.8gkJgofgheat
garegevolved.gWhatgisgthegstandardgenthalpygofgformationg(ΔHof)gofgNaF(s)?
A.g24.8gkJ/molgB.g+570gkJ/molgC.g─24.8gkJ/molgD.g─7.8gkJ/molg
E.g─570gkJ/molg-gCorrectgAnswer-E

Ethanolgundergoesgcombustiongaccordinggtogthegequation:
C2H5OH(l)g+gO2(g)gCO2(g)g+gH2O(l)g(NotgBalanced)
Thegstandardgheatgofgcombustiongofgethanol,gC2H5OH(l),gisg─1366.8gkJ/mol.gGivengthat
:
gΔHof[CO2(g)]g=g─393.5gkJ/mol
ΔHof[H2O(l)]g=g─285.8gkJ/mol
Whatgisgthegstandardgenthalpygofgformationgofgethanol?
A.g3010gkJ
B.g─687.6gkJ
C.g─277.6gkJ
D.g687.6gkJ
E.g1367gkJg-gCorrectgAnswer-C

, Findgthegstandardgenthalpygofgformationgofgethylene,gC2H4(g),ggivengthegfollowinggdata:
C2H4(g)g+g3O2(g)g2CO2(g)g+g2H2O(l)gΔHofg=g─1411gkJ
C(s)g+gO2(g)gCO2(g)gΔHofg=g─393.5gkJ
H2(g)g+g1/2O2(g)gH2O(l)gΔHofg=g─285.8gkJ
A.g52gkJ
B.g87gkJ
C.g731gkJ
D.g1.41g103gkJ
E.g2.77g103gkJg-gCorrectgAnswer-A

Octaneg(C8H18)gundergoesgcombustiongaccordinggtogthegfollowinggthermochemicalgequ
ation:
2C8H18(l)g+g25O2(g)g16CO2(g)g+g18H2O(l)gΔHorxng=g─11,020gkJ.
Givengthat:gΔHof[CO2(g)]g=g─393.5gkJ/mol
ΔHof[H2O(l)]g=g─285.8gkJ/mol
Calculategthegenthalpygofgformationgofg1gmolegofgoctane.
A.g─210gkJgB.g─11,230gkJgC.g22,040gkJgD.g─420gkJgE.g420gkJg-gCorrectgAnswer-A

GlycinegC2H5O2Ngisgimportantgforgbiologicalgenergy.gThegcombustiongofgglycinegisggive
ngbygthegequation,
4C2H5O2N(s)g+g9O2(g)g8CO2(g)g+g10H2O(l)g+g2N2(g)gΔHorxng=g─3857gkJ
GivengthatgΔHof[CO2(g)]g=g─393.5gkJ/mol,gandgΔHof[H2O(l)]g=g─285.8gkJ/mol.gCalculat
egthegenthalpygofgformationgΔHofgpergmolegofgglycine.
A.g─537.2gkJ/mol
B.g─268.2gkJ/molg
C.g2149gkJ/mol
D.g─3178gkJ/mol
E.g─964gkJ/molg-gCorrectgAnswer-A

CalculategΔHorxngforgthegfollowinggreaction.
2H2O2(l)g2H2O(l)g+gO2(g)
gUsegthegfollowingginformation:
gΔHofg(H2O2(l))g=g-187.6gkJ/molg;gΔHofg(H2O(l))g=g-
285.8gkJ/molg;gΔHofg(O2(g))g=g0gkJ/mol
A.g53.0gkJgB.g98.2gkJgC.g-98.2gkJgD.g196.4gkJgE.g─196.4gkJg-gCorrectgAnswer-E

Giveng2Al(s)g+g3/2O2(g)gAl2O3(s)gΔHofg=g─1670gkJg
WhatgisgΔHgforgthegreaction?
2Al2O3(s)g4Al(s)g+g3O2(g)gΔHorxng=g?
A.g3340gkJgB.g1670gkJgC.g─3340gkJgD.g─1670gkJgE.g─835gkJg-gCorrectgAnswer-A

Calculategthegenthalpygchangegforgthegreaction:
gC(graph)g+g2H2(g)g+g1/2O2(g)gCH3OH(l)
Usinggthegfollowingginformation:g
C(graph)g+gO2gCO2(g)gΔHofg=g─393.5gkJ.