Zn and Sn ions coprecipitate when they exist in solution to form mixed oxides. Suggest a precipitating agent that precipitate one of the oxides only a. A silver chloride precipitate is precipitated in gravimetric analysis. Which solution would you recommend to wash the precipitate: AGNO3 or HNO3. Justify your answer. b. Precipitating Element precipitated agent

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Analyze the table of some common inorganic precipitating agents and answer the following questions:
Zn and Sn ions coprecipitate when they exist in solution to form mixed oxides. Suggest a precipitating agent that precipitate one of the oxides
a.
only
A silver chloride precipitate is precipitated in gravimetric analysis. Which solution would you recommend to wash the precipitate: AGNO3 or HNO3.
Justify your answer.
b.
Precipitating
Element precipitated
agent
NH3(aq)
Be (BeO), Al (A12O3), Sc(Sc203), Cr (Cr203), Fe (Fe203) Ga (Ga2O3),
Zr (Zr02), In (In2O3), Sn (SnO2), U (U3O8)
H2S
Cu (CuO), Zn (ZnO or Zn2O4), Ge (GeO), As (As203 or As205), Mo
(Mo03), Sn (SnO2), Sb (Sb2O3 or Sb2O5)
(NH4)2S
Hg (HgS), Co (Co304)
(NH4);HPO4
Mg (Mg2P2O7), Al (AIPO4), Mn (Mn2P2O7), Zn (Zn2P2O7), Zr
(Z12P207), Cd (Cd2P207), Bi (BİP04)
H2SO4
Li, Mn, Sr, Cd, Pb, Ba (all as sulfates)
H;C¿O4
Ca (СаО), Sr (SrO), Th (ThО2)
HCI
Ag (AgCl), Hg (Hg2C12), Na (NaCl), Si (SiO2)
AGNO3
CI (A£CI), Br (AgBr), I (Agl)
(NH4);CO3
Bi (Bi2O3)
NH,SCN
Cu [Cu2(SCN)2]
HNO3
Sn (SnO2)
BaClz
SoF (BASO4)
Transcribed Image Text:Analyze the table of some common inorganic precipitating agents and answer the following questions: Zn and Sn ions coprecipitate when they exist in solution to form mixed oxides. Suggest a precipitating agent that precipitate one of the oxides a. only A silver chloride precipitate is precipitated in gravimetric analysis. Which solution would you recommend to wash the precipitate: AGNO3 or HNO3. Justify your answer. b. Precipitating Element precipitated agent NH3(aq) Be (BeO), Al (A12O3), Sc(Sc203), Cr (Cr203), Fe (Fe203) Ga (Ga2O3), Zr (Zr02), In (In2O3), Sn (SnO2), U (U3O8) H2S Cu (CuO), Zn (ZnO or Zn2O4), Ge (GeO), As (As203 or As205), Mo (Mo03), Sn (SnO2), Sb (Sb2O3 or Sb2O5) (NH4)2S Hg (HgS), Co (Co304) (NH4);HPO4 Mg (Mg2P2O7), Al (AIPO4), Mn (Mn2P2O7), Zn (Zn2P2O7), Zr (Z12P207), Cd (Cd2P207), Bi (BİP04) H2SO4 Li, Mn, Sr, Cd, Pb, Ba (all as sulfates) H;C¿O4 Ca (СаО), Sr (SrO), Th (ThО2) HCI Ag (AgCl), Hg (Hg2C12), Na (NaCl), Si (SiO2) AGNO3 CI (A£CI), Br (AgBr), I (Agl) (NH4);CO3 Bi (Bi2O3) NH,SCN Cu [Cu2(SCN)2] HNO3 Sn (SnO2) BaClz SoF (BASO4)
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