# Who can determine the Ka for CH3NH3+ at 250C?

Anonymous
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### Question Description

Determine the Ka for CH3NH3+ at 250C. The Kb for CH3NH2 is 4.4 X 10 -4.

GNOn
School: UCLA

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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Anonymous
awesome work thanks

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