# chemistry

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What stoichiometric concentration of the indicated substance is required to obtain an aqueous solution with the pH} value shown below?
aniline (C6H5NH2) for PH of 8.90

• chemistry -

C6H5NH2 HOH ==> C6H4NH3^+ + OH^-

Set up an ICE chart, substitute into Kb for aniline of
Kb = (C6H5NH2^+)(OH^-)/(C6H5NH2)
Convert pH to pOH, then to (OH^-) which equals (C6H5NH3^+) and solve for (C6H5NH2).
Post your work if you gets stuck.

• chemistry -

0.147

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