Complete the following reaction:

Question

Complete the following reaction:

HCO₃^-1 +HPO₄^-2 -->

Answer 1

This is going to be a bronsted-lowry acid based reaction.

HCO₃^- has a Ka of 5.6E-11

HPO₄^2- has a Ka of 4.8E-13

So HCO₃^- will be the acid for the favorable reaction, which means HPO₄^2- is the base.

Therefore:

HCO₃^-1 +HPO₄^-2 → CO₃^2-+H₂PO₄^-

acid+base→conjugate base+conjugate acid