Determine the Ka for CH3NH3+ at 250C. The Kb for CH3NH2 is 4.4 X 10 -4.
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First of all, Ka*Kb = Kw (the dissociation constant of water at 25 degrees Celsius) = 10^-14
Ka = Kw/Kb = 10^-14/ (4/4 * 10-4)
Ka = 2.3 * 10^-11
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