How do you determine the OH (aq) concentration in 1.0 M aniline (#C_6H_5NH_2#) solution. (The #K_b# for aniline is #4.0 x 10^-10#?

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Answer 1 · 2017-01-08T23:14:26

You can do it like this:

For a weak base:

#sf(pOH=1/2[pK_b-logb])#

Where b is the concentration of the base.

#sf(pK_b=-logK_b=-log(4xx10^(-10))=9.34)#

#:.##sf(pOH=1/2[9.34-log(1)]#

#:.##sf(pOH=4.67)#

#:.##sf(-log[OH^-]=4.67)#

#:.##sf([OH^-]=2.14xx10^(-5)color(white)(x)"mol/l")#