Help with Organic Chemistry?

Question

CH3CH2Br + OH(-) ==>

CH3CH2Br + (CH3)CO(-)==>

Which [E2] reaction in each pair is faster?

This deals with stronger nucleophile, stronger base, the stronger the nucleophile, which favors the E2 eraction. But which base is stronger? I say it's the OH, but some have said it's the other one (CH3)CO-. So which base is stronger, and WHY? Please include his as part of your answer. Thank you.

Answer 1

I think you mean (CH3)3CO-, which is tert-butoxide and a stronger base than OH because of the electron-donating character of methyl groups. So the second E2 is faster.