Sample Exercise #1

Determine the conjugate acid–base pairs in the following equations:

• HBr(aq) + H2O(l) → H3O+(aq) + Br-(aq)
• HCN(aq) + H2O(l) → H3O+(aq) + CN-(aq)

Write the conjugate bases for:

c) HCO3-

d) HSO4-

Write the conjugate acids for:

e) PO43-

f) HPO42-