Calculate the pH of the solute in an aqueous solution of 037

Calculate the pH of the solute in an aqueous solution of 0.372 M (CH3)3N(aq) if the Kb is 6.5 × 10−5.

What is the percentage protonation of the solute?

Answer in units of %

Solution

ph = 14 - 0.5(pkb-logc)=14-0.5(4.19+.43)=11.69

alpha = sqrt(k/c)=0.5 percent