ANALYTICAL CHEMISTRY FINAL EXAM
QUESTIONS GRADE A+ COMPLETE
EXAM QUESTIONS AND 100% VERIFIED
ANSWERS (2026/2027) PASS
GUARANTEE
TheRconcentrationRofRaRsoluteR(inRmol/LRorRmmol/mL)R-
RCORRECTRANSWEREquilibriumRmolarRconcentration
TheRspeciesRformedRwhenRaRbaseRacceptsRaRprotonR-RCORRECTRANSWERconjugateRacid
SolutionsRthatRtendRtoRresistRchangesRinRpHRasRtheRresultRofRdilutionRorRtheRadditionRofRsmallRamou
ntsRofRacidsRorRbasesR-RCORRECTRANSWERbufferRsolution
TheRprocessRofRsystematicallyRintroducingRanRamountRofRtitrantRthatRisRchemicallyRequivalentRtoRt
heRquantityRofRanalyteRinRaRsampleR-RCORRECTRANSWERtitration
WriteRmass-RandRcharge-balanceRexpressionsRforRaRsolutionRthatRisRsaturatedRinRAg2C2O4R-
RCORRECTRANSWERMB:
[Ag+]R=R2[C2O4^2-]R+R2[HC2O4^-]R+R2[H2CO4]
CB:
[Ag^+]R+R[H3O^+]R=R2[C2O4^2-]R+R[HC2O4^-]R+R[OH^-]
IndicateRwhetherRanRaqueousRsolutionRofRKHC2O4RisRacidic,Rbasic,RorRneutral.RExplainRyourRanswe
r.R-RCORRECTRANSWERHC2O4^-R+RH2OR=RC2O4^2-R+RH3O^+RKa2R=R5.42E-5
, HC2O4^-R+RH2OR=RH2C2O4R+ROH^-RKb2R=R1E-14R/R5.6E-2R=R1.79E-13
SolutionRwillRbeRacidicRsinceRKa2R>>RKb2
DistinguishRbetweenRgravimetricRtitrimetryRandRnon-titrimetricRgravimetricRmethodsRofRanalysisR-
RCORRECTRANSWERGravimetricRtitrimetryRusesRaRweightedRmassRofRaRtitrantRtoRdetermineRtheRco
ncentrationRofRanRanalyteRbasedRonRtheRreactionRbetweenRtheRtitrantR&Ranalyte.RNon-
titrimetricRgravimetricRmethodsRwillRnotRrelyRonRtheRreactionRofRanRanalyteRandRtitrant,RtheyRwillRb
eRmeasuringRchangesRinRmass.
DemonstrateRhowRtheRsulfideRionRconcentrationRisRrelatedRtoRtheRhydroniumRionRconcentrationRof
RaRsolutionRthatRisRkeptRsaturatedRwithRhydrogenRsulfide.R-
RCORRECTRANSWERTheRoverallRdissociationRconstantRforRH2SRis
[H3O^+]^2R[S^2-]R/R[H2S]R=RK1K2
InRaRsolutionRsaturatedRwithRtheRgas,R[H2S]RisRconstant,Rtherefore
[S^2-]R=R[H2S]R/R[H3O^+]R*RK1K2R
or
[S^2-]R=RKR/R[H3O^+]^2
ARsolutionRofRHClO4RwasRstandardizedRbyRdissolvingR0.4008RgRofRprimary-standard-
gradeRHgORinRaRsolutionRofRKBr:R
QUESTIONS GRADE A+ COMPLETE
EXAM QUESTIONS AND 100% VERIFIED
ANSWERS (2026/2027) PASS
GUARANTEE
TheRconcentrationRofRaRsoluteR(inRmol/LRorRmmol/mL)R-
RCORRECTRANSWEREquilibriumRmolarRconcentration
TheRspeciesRformedRwhenRaRbaseRacceptsRaRprotonR-RCORRECTRANSWERconjugateRacid
SolutionsRthatRtendRtoRresistRchangesRinRpHRasRtheRresultRofRdilutionRorRtheRadditionRofRsmallRamou
ntsRofRacidsRorRbasesR-RCORRECTRANSWERbufferRsolution
TheRprocessRofRsystematicallyRintroducingRanRamountRofRtitrantRthatRisRchemicallyRequivalentRtoRt
heRquantityRofRanalyteRinRaRsampleR-RCORRECTRANSWERtitration
WriteRmass-RandRcharge-balanceRexpressionsRforRaRsolutionRthatRisRsaturatedRinRAg2C2O4R-
RCORRECTRANSWERMB:
[Ag+]R=R2[C2O4^2-]R+R2[HC2O4^-]R+R2[H2CO4]
CB:
[Ag^+]R+R[H3O^+]R=R2[C2O4^2-]R+R[HC2O4^-]R+R[OH^-]
IndicateRwhetherRanRaqueousRsolutionRofRKHC2O4RisRacidic,Rbasic,RorRneutral.RExplainRyourRanswe
r.R-RCORRECTRANSWERHC2O4^-R+RH2OR=RC2O4^2-R+RH3O^+RKa2R=R5.42E-5
, HC2O4^-R+RH2OR=RH2C2O4R+ROH^-RKb2R=R1E-14R/R5.6E-2R=R1.79E-13
SolutionRwillRbeRacidicRsinceRKa2R>>RKb2
DistinguishRbetweenRgravimetricRtitrimetryRandRnon-titrimetricRgravimetricRmethodsRofRanalysisR-
RCORRECTRANSWERGravimetricRtitrimetryRusesRaRweightedRmassRofRaRtitrantRtoRdetermineRtheRco
ncentrationRofRanRanalyteRbasedRonRtheRreactionRbetweenRtheRtitrantR&Ranalyte.RNon-
titrimetricRgravimetricRmethodsRwillRnotRrelyRonRtheRreactionRofRanRanalyteRandRtitrant,RtheyRwillRb
eRmeasuringRchangesRinRmass.
DemonstrateRhowRtheRsulfideRionRconcentrationRisRrelatedRtoRtheRhydroniumRionRconcentrationRof
RaRsolutionRthatRisRkeptRsaturatedRwithRhydrogenRsulfide.R-
RCORRECTRANSWERTheRoverallRdissociationRconstantRforRH2SRis
[H3O^+]^2R[S^2-]R/R[H2S]R=RK1K2
InRaRsolutionRsaturatedRwithRtheRgas,R[H2S]RisRconstant,Rtherefore
[S^2-]R=R[H2S]R/R[H3O^+]R*RK1K2R
or
[S^2-]R=RKR/R[H3O^+]^2
ARsolutionRofRHClO4RwasRstandardizedRbyRdissolvingR0.4008RgRofRprimary-standard-
gradeRHgORinRaRsolutionRofRKBr:R
