Question

For the Bronsted acid? base reaction shown below, determine the conjugate acid? base pairs. Then give the curved-arrow notation for the reaction in the left-to-right direction. (To draw the arrows, click on Fill in the blanks with the letters A,B,C, and D, representing the species in the reaction above. (It doesn?t matter which pair you list first.) acid and its conjugate base acid and its conjugate base

Answer 1

CH₃COOH + H₂O $\rightarrow$ CH3COO^- + H₃O⁺

^{Now from the above reaction it is clear that H₂O is picking a proton from} CH₃COOH.

The species that leaves a proton is called an acid and the species after leaving one proton is called its conjugate base.

Similarly the species that accepts a proton is called a Bronsted base and the species it forms after accepting the proton is called its conjugate acid.

So here CH₃COOH is an acid and CH₃COO^- is it's conjugate base.

The other pair: H₂O is a base here and H₃O⁺ is it's conjugate acid.