Question

Conjugate Acid-Base Pairs:

a.) The formula for the conjugate base of H₂C₂O₄ is _____________.

b.) The formula for the conjugate acid of HCO₃^- is ______________.

c.) The formula for the conjugate acid of C₂O₄^2_ is ______________.

d.) The formula for the conjugate acid of HPO₄^2_ is ______________.

e.) The formula for the conjugate base of HCO₃^- is ______________.

f.) The formula for the conjugate acid of HSO₃^- is _______________.

Answer 1

An acid is a proton donor and a base is a proton acceptor . An acid loses a proton to form conjugate base and a base accepts a proton to give its conjugate acid .

Thus conjugate acid base pair differ only by the count of one proton .

a Conjugate base of acid H2C2O4 is obtained when H2C2O4 loses a proton(H+) .

Thus conjugate base of H2C2O4  is HC2O4-

b. Conjugate acid of base HCO3- is obtained when HCO3- accepts a proton .

Thus conjugate acid  of HCO3- is H2CO3

c. Conjugate acid of base C2O42- is obtained when C2O42- accepts a proton

Thus conjugate acid of C2O42- is HC2O4-

d. Conjugate acid of base HPO42- is obtained when HPO42- accepts a proton

Conjugate acid of HPO42- is H2PO4-

e. Conjugate base of acid HCO3- is obtained when HCO3- loses a proton(H+)

Conjugate base of HCO3- is CO3-

f. Conjugate acid of base HSO3- is obtained when HSO3-  accepts a proton

Conjugate acid of HSO3- is H2SO3