Posted by Chaitanya, on Saturday, April 19, 2008 at 10:48pm.
Write the ionization for the weak base. I would call it BOH.
Write the Kb expression.
Set up an ICE chart if that will help.
I would call BOH 1.3 M, then concn B^+ = 1.3 x 0.0072.
The unionized BOH is 1.3 x 0.9928,
Substitute these into Kb expression and solve for Kb. post your work if you need further assistance.
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