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WorksheetsPrecipitation Lab Quiz
Total questions: 12
Worksheet time: 12mins
When solutions of two ionic compounds are combined and a solid forms, the process is called
hydration
solvation
dissociation
precipitation
In writing the chemical equation for a precipitation reaction, what abbreviation of the physical state must appear with one of the products?
(s)
(g)
(l)
(w)
What is the result of mixing aqueous solutions of Fe(NO3)3 and K3PO4?
FePO4(s) + KNO3(aq)
Fe3(PO4)2(s) + 3KNO3(aq)
FeK3(NO3)3(aq) + PO4(s)
No reaction occurs
What would be the formula of the precipitate that forms when Pb(NO3)2 (aq) and K2SO4 (aq) are mixed?
K(NO3)2
PbSO4
PbK2
H2O
What is the precipitate formed when solutions of CaCl2(aq) and Na2CO3(aq) are mixed?
CaCO3(s)
NaCl(aq)
CaNa2(s)
CO2(g)
Write ionization equations (Dissociation/Decomposition reaction!) for the following electrolytes. Show physical states of all species involved!
HBr(aq)
HBr(aq) --> H+(aq) + Br-(aq)
HBr(aq) --> H2(aq) + Br(aq)
HBr(aq) --> HBr(s)
HBr(aq) --> 2H+(aq) + 2Br-(aq)
Identify the spectator ion(s) in the equation: 2Ag+(aq) + 2NO3–(aq) + 2Na+(aq) + S2–(aq) --> Ag2S(s) + 2Na+(aq) + 2NO3–(aq)
2Ag+(aq) + 2NO3–(aq)
2Na+(aq) + 2NO3–
2Na+(aq) + S2–(aq)
Ag2S(s) + 2Na+(aq
What are the spectator ions in this reaction? Fe+3(aq) + 3Cl-1(aq) + Na+1(aq) + OH-1(aq) → Fe(OH)3(s) + Na+1(aq) + Cl-1(aq)
Fe+3 and Cl-1
Na+1 and Cl-1
Fe+3 and Na+
Na+1 and OH-1
Considering the following precipitation reaction:
Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq)
What is the correct complete ionic equation?
Pb2+ + (NO3)2- + 2K+ + 2I- → PbI2(s) + 2K+ + 2NO3-
Pb2+ + 2NO3- +2K+ + I- → PbI2(s) + 2K+ + NO3-
Pb2+ + 2NO3- + 2K+ + 2I- → PbI2(s) + 2K+ + 2NO3-
Pb2+ + 2NO3- + 2K+ + 2I- → Pb2+ + 2I- + 2K+ + 2NO3-
What is the net ionic equation for the precipitation reaction between BaCl2 and Na2SO4? (make your balanced chemical equation first!)
BaCl2(aq) + Na2SO4(aq) --> BaSO4(s) + 2NaCl(aq)
Na+(aq) + Cl-(aq) --> NaCl(s)
Ba2+(aq) + SO42-(aq) --> BaSO4(s)
Ba2+(aq) + 2Cl-(aq) + 2 Na+(aq) + SO42-(aq) --> BaSO4(s) + 2Cl-(aq) + 2Na+(aq)
