Find the [OH−] of a 0.32 M methylamine (CH3NH2) solution. (The value of Kb for methylamine (CH3NH2) is 4.4×10−4.) Express your answer to two significant figures and include the appropriate units.

Explanation:

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In this case, for the dissociation of methylamine:

We can write the basic dissociation constant as:

That in terms of the reaction extent , turns out:

That has the following solution for :

Yer 0.01165M is valid only as no negative concentrations are eligible. It means that it is the concentration of hydroxyl ions in the solution:

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explanation: