Lab 13 Results
description
Transcript of Lab 13 Results
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Lab 13 ResultsLab 13 Results
Reactions of AqueousReactions of Aqueous
Ionic CompoundsIonic Compounds
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NH4OH
Pb(NO3)2
FeCl3
Na2CO3
HCl Na3PO4 KI
White
ppt.FaintWhit
eppt.
White
ppt.
NVR
NVR
bbls.
NVR
Orange
ppt.
NVR
NVR
Amber
NVP
NVR
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Analysis and ConclusionsAnalysis and Conclusions
• Question 1: Question 1: – Identify all reactions that produced Identify all reactions that produced
a precipitate with:a precipitate with:
Lead (II) nitrateLead (II) nitrate
Pb(NOPb(NO33))2 (aq)2 (aq)
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NH4OH
Pb(NO3)2
FeCl3
Na2CO3
HCl Na3PO4 KI
White
ppt.
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NH4OH(aq) Pb(NO3)2(aq)
NH4+1 OH-1 Pb2+ NO3
-1
NH4+1
OH-1
Pb2+
NO3-1
+
What Reacts?
-2NO3
-1
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NH4OH(aq) Pb(NO3)2(aq)
NH4+1 OH-1 Pb2+ NO3
-1
NH4+1
OH-1
Pb2+
NO3-1
+
Willthe two cationsreact?
No!Bothhave(+)
charges
repel
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NH4OH(aq) Pb(NO3)2(aq)
NH4+1 OH-1 Pb2+ NO3
-1
NH4+1
OH-1
Pb2+
NO3-1
+
Willthe two anionsreact?
No!Bothhave(-)
chargesrepel
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NH4OH(aq) Pb(NO3)2(aq)
NH4+1 OH-1 Pb2+ NO3
-1
+
Opposites Attract(+) (-)
NH4+1 NO3
-1
Pb2+ OH-1
NH4NO3(aq)
Pb(OH)2(s)(White ppt.)
Insoluble(Falls out of
solution)
Turns cloudy white
OH-1
Soluble(stays dissolved
in H2O)
Cations Anions
NH4+1
Pb2+
NO3-1
OH-1
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NH4OH(aq) + Pb(NO3)2(aq) NH4NO3(aq) + Pb(OH)2(s)
Chemical Equation needs to be balanced.
22
Chemical Equation is now balanced.
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FeCl3(aq) Pb(NO3)2(aq)
Fe+3 Cl-1 Pb2+ NO3-1
+
(+) (-)
Fe3+ NO3-1
Pb2+ Cl-1
Fe(NO3)3(aq)
PbCl2(s)Faint White
ppt.Insoluble
(Falls out of solution)
Cl-1
Soluble(stays dissolved
in H2O)
Cations Anions
Fe3+
Pb2+
NO3-1
Cl-1
3
FeCl3(aq)
NO3-1
NO3-1
NO3-1
is alwayssoluble
Pb(NO3)2(aq)
2
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FeCl3 (aq) + Pb(NO3)2(aq) Fe(NO3)3 (aq) + PbCl2(s)
Chemical Equation needs to be balanced.
22
Chemical Equation is now balanced.
33
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Na2CO3(aq) Pb(NO3)2(aq)
Na+ CO32- Pb2+ NO3
-1
+
(+) (-)
Na+ NO3-1
Pb2+ CO32-
NaNO3(aq)
PbCO3(s)White ppt.
Insoluble(Falls out of
solution)
Soluble(stays dissolved
in H2O)
Cations Anions
Na+
Pb2+
NO3-1
CO32-
2
Na2CO3(aq)
Na+ & NO3-1
are alwayssoluble
Pb(NO3)2(aq)
2
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Na2CO3 (aq) + Pb(NO3)2(aq) NaNO3 (aq) + PbCO3(s)
Chemical Equation needs to be balanced.
2
Chemical Equation is now balanced.
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CaCl2(aq) Pb(NO3)2(aq)
Ca2+ Cl-1 Pb2+ NO3-1
+
(+) (-)
Ca2+ NO3-1
Pb2+ Cl-1
Ca(NO3)2(aq)
PbCl2(s)Faint White
ppt.Insoluble
(Falls out of solution)
Cl-1
Soluble(stays dissolved
in H2O)
Cations Anions
Ca2+
Pb2+
NO3-1
Cl-1
2
CaCl2(aq)
NO3-1
NO3-1
is alwayssoluble
Pb(NO3)2(aq)
2
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CaCl2 (aq) + Pb(NO3)2(aq) Ca(NO3)2 (aq) + PbCl2(s)
Chemical Equation is balanced as written.
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NaOH(aq) Pb(NO3)2(aq)
Na+ OH- Pb2+ NO3-1
+
(+) (-)
Na+ NO3-1
Pb2+ OH-
NaNO3(aq)
Pb(OH)2(s)White ppt.
Insoluble(Falls out of
solution)OH-
Soluble(stays dissolved
in H2O)
Cations Anions
Na+
Pb2+
NO3-1
OH-
Na+ & NO3-1
are alwayssoluble
Pb(NO3)2(aq)
2
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NaOH(aq) + Pb(NO3)2(aq) NaNO3(aq) + Pb(OH)2(s)
Chemical Equation needs to be balanced.
22
Chemical Equation is now balanced.
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H2SO4(aq) Pb(NO3)2(aq)
H+ SO42- Pb2+ NO3
-1
+
(+) (-)
H+ NO3-1
Pb2+ SO42-
HNO3(aq)
PbSO4(s)White ppt.
Insoluble(Falls out of
solution)
Soluble(stays dissolved
in H2O)
Cations Anions
H+
Pb2+
NO3-1
SO42-
2
H2SO4(aq)
NO3-1
is alwayssoluble
Pb(NO3)2(aq)
2
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H2SO4 (aq) + Pb(NO3)2(aq) HNO3 (aq) + PbSO4(s)
Chemical Equation needs to be balanced.
2
Chemical Equation is now balanced.
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CuSO4(aq) Pb(NO3)2(aq)
Cu2+ SO42- Pb2+ NO3
-1
+
(+) (-)
Cu2+ NO3-1
Pb2+ SO42-
Cu(NO3)2 (aq)
PbSO4(s)White ppt.
Insoluble(Falls out of
solution)
Soluble(stays dissolved
in H2O)
Cations Anions
Cu2+
Pb2+
NO3-1
SO42-
NO3-1
is alwayssoluble
Pb(NO3)2(aq)
2
NO3-1
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CuSO4(aq) + Pb(NO3)2(aq) Cu(NO3)2(aq) + PbSO4(s)
Chemical Equation needs to be balanced.Chemical Equation balanced as written
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KI(aq) Pb(NO3)2(aq)
K+ I- Pb2+ NO3-1
+
(+) (-)
K+ NO3-1
Pb2+ I-
KNO3(aq)
PbI2(s)BrightYellow ppt.
Insoluble(Falls out of
solution)I-
Soluble(stays dissolved
in H2O)
Cations Anions
K+
Pb2+
NO3-1
I-
K+ & NO3-1
are alwayssoluble
Pb(NO3)2(aq)
2
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KI(aq) + Pb(NO3)2(aq) KNO3(aq) + PbI2(s)
Chemical Equation needs to be balanced.
22
Chemical Equation is now balanced.
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Na3PO4(aq) Pb(NO3)2(aq)
Na+ PO43- Pb2+ NO3
-1
+
(+) (-)
Na+ NO3-1
Pb2+PO43-
NaNO3(aq)
Pb3(PO4)2 (s)White ppt.
Insoluble(Falls out of
solution)
Soluble(stays dissolved
in H2O)
Cations Anions
Na+
Pb2+
NO3-1
PO43-
3
Na3PO4(aq)
Na+ & NO3-1
are alwayssoluble
Pb(NO3)2(aq)
2
Pb2+
Pb2+PO4
3-
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Na3PO4(aq) + Pb(NO3)2(aq) NaNO3(aq) + Pb3(PO4)2(s)
Chemical Equation needs to be balanced.
62
Chemical Equation is now balanced.
3
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HCl(aq) Pb(NO3)2(aq)
H+ Cl- Pb2+ NO3-1
+
(+) (-)
H+ NO3-1
Pb2+ Cl-
HNO3(aq)
PbCl2(s)Faintwhite ppt.
Insoluble(Falls out of
solution)Cl-
Soluble(stays dissolved
in H2O)
Cations Anions
H+
Pb2+
NO3-1
Cl-
NO3-1
is alwayssoluble
Pb(NO3)2(aq)
2
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HCl(aq) + Pb(NO3)2(aq) HNO3(aq) + PbCl2(s)
Chemical Equation needs to be balanced.
22
Chemical Equation is now balanced.
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Analysis and ConclusionsAnalysis and Conclusions
• Question 2: Question 2: – Identify all reactions that produced Identify all reactions that produced
a precipitate with the ammonia a precipitate with the ammonia solution:solution:
Ammonium hydroxideAmmonium hydroxide
NHNH44OHOH (aq) (aq)
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NH4OH(aq) Pb(NO3)2(aq)
NH4+1 OH-1 Pb2+ NO3
-1
+
(+) (-)
NH4+1 NO3
-1
Pb2+ OH-1
NH4NO3(aq)
Pb(OH)2(s) White ppt.
Insoluble(Falls out of
solution)OH-1
Soluble(stays dissolved
in H2O)
Cations Anions
NH4+1
Pb2+
NO3-1
OH-1
Pb(NO3)2(aq)
2
NH4+1 & NO3
-1
are alwayssoluble
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NH4OH(aq) + Pb(NO3)2(aq) NH4NO3(aq) + Pb(OH)2(s)
Chemical Equation needs to be balanced.
22
Chemical Equation is now balanced.
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NH4OH(aq) CuSO4(aq)
NH4+1 OH-1 Cu2+ SO4
2-
+
(+) (-)
NH4+1 SO4
2-
Cu2+ OH-1
(NH4)2SO4(aq)
Cu(OH)2(s)LightBlue ppt.
Insoluble(Falls out of
solution)OH-1
Soluble(stays dissolved
in H2O)
Cations Anions
NH4+1
Cu2+
SO42-
OH-1
NH4+1
is alwayssolubleNH4
+1
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NH4OH(aq) + CuSO4(aq) (NH4)2SO4(aq) + Cu(OH)2(s)
Chemical Equation needs to be balanced.
2
Chemical Equation is now balanced.
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NH4OH(aq) AgNO3(aq)
NH4+1 OH-1 Ag+ NO3
-1
+
(+) (-)
NH4+1 NO3
-1
Ag+ OH-1
NH4NO3(aq)
AgOH(s)Tan ppt.
Insoluble(Falls out of
solution)
Soluble(stays dissolved
in H2O)
Cations Anions
NH4+1
Ag+
NO3-1
OH-1
NH4+1 & NO3
-1
are alwayssoluble
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NH4OH(aq) + AgNO3(aq) NH4NO3(aq) + AgOH(s)
Chemical Equation needs to be balanced.Chemical Equation is now balanced.
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NH4OH(aq) FeCl3(aq)
NH4+1 OH-1 Fe3+ Cl-
+
(+) (-)
NH4+1Cl-
Fe3+ OH-
NH4Cl(aq)
Fe(OH)3(s) FaintOrange
ppt.
Insoluble(Falls out of
solution)OH-
Soluble(stays dissolved
in H2O)
Cations Anions
NH4+1
Fe3+
Cl-
OH-1
FeCl3(aq)
3
NH4+1
is alwayssoluble
OH-
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NH4OH(aq) + FeCl3(aq) NH4Cl(aq) + Fe(OH)3(s)
Chemical Equation needs to be balanced.
33
Chemical Equation is now balanced.
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Analysis and ConclusionsAnalysis and Conclusions• Question 3: Question 3:
– Identify all chemical reactions that Identify all chemical reactions that produced bubbles:produced bubbles:
CuSO4
KINa3PO4HClPb(NO3)
2
H2SO
4
NaOH
AgNO3
CaCl2 HNO3
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Na2CO3(aq) HCl(aq)
Na+ CO32- H+ Cl-
+
(+) (-)
Na+Cl-
H+ CO32-
NaCl(aq)
H2O(l) Bubbles
Soluble(stays dissolved
in H2O)
Cations Anions
Na+
H+
Cl-
CO32-
2
Na2CO3(aq)
Na+
is alwayssoluble
CO2O2-H+ BubblesCO2
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Na2CO3(aq) + HCl(aq) CO2(g) + H2O(l) + NaCl (aq)
Chemical Equation needs to be balanced.
2 2
Chemical Equation is now balanced.
H2O(l)
CO2 O2- H+CO2Na+ Cl-
NaCl
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Na2CO3(aq) H2SO4(aq)
Na+ CO32- H+ SO4
2-
+
(+) (-)
Na+ SO42-
H+ CO32-
Na2SO4 (aq)
H2O(l) Bubbles
Soluble(stays dissolved
in H2O)
Cations Anions
Na+
H+
SO42-
CO32-
2
Na2CO3(aq)
Na+
is alwayssoluble
CO2O2-H+
H2SO4(aq)
2
Na+
BubblesCO2
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Na2CO3(aq) + H2SO4(aq) CO2(g) + H2O(l) + Na2SO4(aq)
Chemical Equation is balanced as written.
H2O(l)
CO2 O2- H+CO2Na+ SO42-
Na2SO4
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Na2CO3(aq) HNO3 (aq)
Na+ CO32- H+ NO3
-
+
(+) (-)
Na+ NO3-
H+ CO32-
NaNO3 (aq)
H2O(l) Bubbles
Soluble(stays dissolved
in H2O)
Cations Anions
Na+
H+
NO3-
CO32-
2
Na2CO3(aq)
Na+
is alwayssoluble
CO2O2-H+ BubblesCO2
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Na2CO3(aq) + HNO3(aq) CO2(g) + H2O(l) + NaNO3(aq)
Chemical Equation needs to be balanced.
2 2
Chemical Equation is now balanced.
H2O(l)
CO2 O2- H+CO2Na+ NO31-
NaNO3
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Analysis and ConclusionsAnalysis and Conclusions
• Question 4: Question 4: – What do all the chemical reactions What do all the chemical reactions
that produced bubbles have in that produced bubbles have in common?common?
•Bubbles happened whenever an ACID was reacted with sodium carbonate, Na2CO3
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Analysis and ConclusionsAnalysis and Conclusions
• Question 5: Question 5: – What reactions gave a color change What reactions gave a color change
but no precipitate?but no precipitate?
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NH4OH
PbNO3
FeCl3
Na2CO3
HCl Na3PO4 KI
Amber
NVP
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FeCl3
KI
Amber
NVP
The reaction between KI and FeCl3 probably made a complex ion.
Fe3+ + I- FeI2+(aq)
(Still dissolved)
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Analysis and ConclusionsAnalysis and Conclusions
• Question 6: Question 6: – Which mixings could you have Which mixings could you have
predicted in advance would not predicted in advance would not result in a reaction?result in a reaction?
Any reaction that had common ions.
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NH4OH
PbNO3
FeCl3
Na2CO3
HCl Na3PO4 KI
BothhaveNa+
Bothhave
Cl-