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Chemistry Help?

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Data:
test tube:                                     1                 2                      3                      4                   Sat. soln of PbI2
mL 0.012 M Pb(NO3)2                5                  5                       5                       5
ml 0.03 M KI.                                  2             3                         4                   5
mL 0.20 M KNO3.                          3             2                        1                      0 

Total volume in mL.                    10                10                    10                     10  

Absorbance of soln.                   0.77             1.29                (Broken)            0.080            0.134

[I] in mol/L at equilibrium.             ?                  ?                          ?                         ?                           ?

Calculations:
Initial # mol Pb2+.               __* 10 ^(-5).         __* 10 ^(-5).       __* 10 ^(-5).        __*10 ^(-5)

 

asked Apr 26, 2015 in CHEMISTRY by heather Apprentice

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