How do you calculate the molar concentration of OH in a 0.075 M solution of ethylamine?

1 Answer
anor277
Apr 6, 2017

#"Ethylamine"# acts as a Bronsted base in aqueous solution:

Explanation:

#EtNH_2(aq) + H_2O(l) rightleftharpoons EtNH_3^+ + HO^-#

#K_b=([EtNH_3^+][""^(-)OH])/([EtNH_2])#

We could solve this equation had we a value for #K_b# for #"ethylamine"#, or #K_a# for #"ethyl ammonium cation"#; such values are available, and it should have been supplied with the question.

Related questions
See all questions in pH calculations
Impact of this question
3263 views around the world
You can reuse this answer
Creative Commons License