Question

 

1.) Suppose I tell you that the following equillibrium is to the left.

HCO₃^-_(aq) + H₂O _(l) <---> CO₃^2-_(aq) + H₃O⁺_(aq)

What is a stronger acid, HCO₃^- or H₃O+?
What is a stronger base, CO₃^2- or H₂O?


2.) Suppose I tell you that the following equilibrium is to the left.
CO₃^2-_(aq) + H₂O_(l) <---> HCO₃^-_(aq) + OH^-_(aq)

Which is the stronger base, CO₃^- or OH^-?

3.) Does the following reaction go to completion?

HC₂H₃O_{2 (aq)} + H₂O _(l) ??? C₂H₃O₂^-_(aq) + H₃O⁺

Which is the stronger acid, HC₂H₃O₂ or H₃O⁺?

Answer 1

2)

    CO₃^2-_(aq)         +   H₂O_(l) <--=-------------------------> HCO₃^-_(aq) + OH^-_(aq)

(conjugate base) (conjugate acid)                          ( acid )            ( base )

left side moving means HCO3- strong acid and OH- strong base . so the base from strong acid always weak .

so CO3-2 weak . OH- is strong

3)

no the reaction doesnot go to completion. because HC₂H₃O2 is a weak acid . H3O+is stronger acid. becuase weak acid always gives only certain amount H+