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Determine Kb for the nitrite ion, NO2-. In a 0.10-M solution, this base is 0.0015% ionized.

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Chemistry

Determine Kb for the nitrite ion, NO2-. In a 0.10-M solution,this base is 0.0015% ionized.

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4.4 Ratings (969 Votes)

The ionization equation of nitrite ion will be

                            NO2- + H2O --> HNO2 + OH-

Initial                    0.1                         0              0

Change               -x                          x                 x

Equilibrium        0.1-x                     x                 x

x = 0.0015 X 0.1 / 100 = 0.00000015

Kb = [HNO2] [ OH-] / [NO2-]

Kb = 0.00000015 X 0.00000015 / 0.1 -0.00000015 =

Kb = 2.25 X 10^-11
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