What is the pH of a 0.050 M triethylamine (C2H5)3N solution? (Kb= 5.3 x 10^-4)
Please include steps for how to solve the problem. Thank you! :)
Please include steps for how to solve the problem. Thank you! :)
1 Answer
Explanation:
We address the equilibrium...
For which
And now we simply put in some numbers, and NOTE that
You notice that the approximations get betterer and betterer the more we make and I am prepared to accept
And so
Alternatively this could solved by the quadratic equation. The approximation method is generally a bit easier than this approach. It is up to you to be able to use BOTH methods...