Chemistry: Final Exam Review Questions And Answers

Chemistry: Final Exam Review
Questions And Answers
Ammonia,gacidgorgbase?g-gCORRECTggANSWER-Baseg(draingcleanersgaregbases).

Aregnobleggasesgreactive?g-gCORRECTggANSWER-
NO!gTheyghavegagfullgoctetgofgelectrons.gTheygdognotgwantgtogreactgwithganything.

Balancegthegequation:

C3H8g+gO2g--->gCO2g+gH2Og-gCORRECTggANSWER-1gC3H8g+g3gO2g--->g5gCO2g+g4gH2O

Balancegthegequation:

H2g+gO2g----->gH20g-gCORRECTggANSWER-2gH2g+gO2g---->g2gH20

C2H4g+g3gO2g---->g2gCO2g+g2gH2O

Ifgyougstartgwithg45ggramsgofgethyleneg(C2H4),ghowgmanyggramsgofgcarbongdioxidegwillgbeg
produced?g-gCORRECTggANSWER-141.4gggCO2

Definegactivationgenergy.g-gCORRECTggANSWER-
Thegenergygrequiredgtogstartgagchemicalgreaction.

Definegequilibrium.g-gCORRECTggANSWER-
Equilibriumgisgestablishedgwhengthegrategofgthegforwardgreactiongisgequalgtogthegrategofgthegr
eversegreaction.

Definegneutralization.g-gCORRECTggANSWER-
Whengangacidgreactsgwithgagbasegtogformgwatergandgagsalt.gpHg=g7.

DefinegReactiongRateg-gCORRECTggANSWER-
Thegdecreasegingconcentrationgofgreactantsgorgthegincreasegingconcentrationgofgproductsgw
ithgtime.

Definegsolute.g-gCORRECTggANSWER-Thegpartgofgthegsolutionginglessgamount.

, Definegsolvent.g-gCORRECTggANSWER-
Thegpartgofgthegsolutionginggreatergamount.g(HINT:gsolventgisgagbiggergwordgthangsolute)

Definegspecificgheatgcapacity.g-gCORRECTggANSWER-
Thegamountgofgheatgrequiredgtograiseg1ggofgagsubstancegtog1gdegreesgCelsius.

DefinegSTP.g-gCORRECTggANSWER-Pressureg=g1gatmgorg101.3gkPa
Temperatureg=g0gdegreesgCelsiusgorg273gK

DrawgthegLewisgDotgStructuregforgangatomgofgNeongingitsggroundgstate.g-
gCORRECTggANSWER-..

g:gNeg:g

g..




DrawgthegLewisgDotgStructuregforgCarbon.g-gCORRECTggANSWER-.
g.gCg.g

g.




DrawgthegLewisgDotgStructuregforgFluorine.g-gCORRECTggANSWER-.
g:gFg:g

g..




EqualgvolumesgofggasesgatgSTPghavegequalg_____.g-gCORRECTggANSWER-Moles.

Feelsgslippery;gacidgorgbase?g-gCORRECTggANSWER-Base.

FindgthegmolargmassgofgAl2(SO4)3g-gCORRECTggANSWER-342gg/mol

Givengthegreactiongatgequilibrium:

1/2gN2g(g)g+1/2gO2g(g)g+g21.6gkcalg--->gNOg(g)
g

Whatgwillghappengifgtemperaturegisgincreased?g-gCORRECTggANSWER-
Increasinggtemperaturegmeansgheatgisgbeinggaddedgmoregtogthegleftgsideg(thinkgmudgslide).
gThegreactiongwillgshiftgrightgtogformgmoregNO.




Howgdoesgagcatalystgspeedgupgagchemicalgreaction?g-gCORRECTggANSWER-
Agcatalystgspeedsgupgagchemicalgreactiongbygfindinggangalternategpathwaygwithgaglowergacti
vationgenergy.

Howgdoesgincreasinggtemperaturegaffectgthegrategofgreaction?g-gCORRECTggANSWER-
Increasinggtemperaturegcausesgthegkineticgenergygtogincrease.gThus,gmoleculesgaregmovi
nggfastergandgcollidinggmoregfrequently.gThisgcausesgthegrategofgreactiongtogincrase.

Howgdoesgsurfacegareaginfluencegreactiongrate?g-gCORRECTggANSWER-
Bygincreasinggthegsurfacegareagofgreactantgmolecules,gwegaregincreasinggthegspacegorgpoin