Worksheet: Acid and Base Strengths
In this worksheet, we will practice defining the strength of an acid or base and describing the relationships between pH, pOH, pKa, and pKb.
A solution has a concentration of 0.10 M and a formic acid concentration of 0.10 M. Why is the hydronium ion concentration in this solution mainly determined by the concentration of ?
- A does not dissociate at all, so is the only contributor to .
- B reacts with , neutralizing it.
- C dissociates to form both hydroxide and hydronium ions, so it has no net effect on .
- D dissociates completely, while only partially dissociates.
Why is the ionization constant, , for larger than the ionization constant for ?
- AThe bonds in are more easily broken because the bonding electrons are delocalised over more oxygen atoms.
- BThe bonds in are less easily broken because the bonding electrons are delocalised over more oxygen atoms.
- CThe protons of are more easily removed because they are bonded to a larger number of oxygen atoms.
- DThe conjugate base of is less easily protonated because the negative charge is delocalized over more oxygen atoms.
- EThe conjugate base of is more easily protonated because the negative charge is delocalized over more oxygen atoms.