Which is a stronger base?

Solution:

Here we will have to find out the stronger base.

Base:- In a chemical reaction an  atom which can accept proton is called base. A strong base is a base that breaks apart 100% in solution.

Explanation:

Basicity of a molecule can be determine from its structure . Higher electron density within the molecule means that it is more likely to share electrons with another molecule stronger basicity Lower electron density within a molecule means that it is less likely to share electrons with another molecule, weaker basicity

Step 1

Here Br  is less electronegative than F, so the Br-substituted acetate ion is weaker acid than that of F-substituted acetate ion . The weaker acid has a stronger conjugate base, thus CH3CH(Br)COO-  is a stronger base.