For this, we shall use the Henderson-Hasselbalch equation as in:
We can get pOH from pH and pKb from Kb.
pOH = 9.80
pKb = 9.42
Substituting in the equation:
An aqueous solution contains dissolved C6H5NH3Cl and C6H5NH2. The concentration of C6H5NH2 is 0.50 M and pH is 4.20.
a. Calculate the concentration of C6H5NH3+ in this buffer solution.
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