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E-13
Part II. Solubility of Lead
Salts
Part
II A:
All reagent(s) added
description of
reactants
observations &
description
product(s)
formed
A1
0.5 mL Pb(NO3)2(aq)
0.5 mL NaCl(aq)
3.0 mL H2O
A2
0.5 mL Pb(NO3)2(aq)
0.5 mL NaCl(aq)
2 mL H2O
+ 1 mL HCl
A3
0.5 mL Pb(NO3)2(aq)
0.5 mL NaCl(aq)
3.0 mL HCl
Part
II B:
All reagent(s) added
description of
reactants
observations &
description
product(s)
formed (remaining)
B1
Pb(NO3)
2(aq)
+ NaCl
(aq)
B2
Na2CrO
4
(aq)
B3
Na2S(aq)
a.
Pb(NO3)
2(aq)
+ Na2S(aq)
B4
b.
Na2CrO
4
(aq)
B5
NaCl
(aq
Part III. Effect of Temperature
on Equilibrium Involving Cobalt Ions
1.
Colour of the cobalt(II) equilibrium
solution at room temperature:
__________________________
2.
Observations of the cobalt
system as the temperature of the solution is changed:
a) The effect of decrease
in temperature?
____________________________________________
b) The effect of increase
in temperature?
____________________________________________
3.
Briefly describe your test for
reversibility and your observations ____________________________
____________________________________________________________________________
Is this reaction reversible?
________________________________________________________
___________________________
_____________________________
_______________
Signature of Laboratory Instructor
Name of Student
Laboratory Section
