Final answer:
The pKa values of acids and bases can be found in tables such as 17.5.2 and 17.7.2. Smaller values of pKa indicate stronger acids. For example, nitrous acid is stronger than hydrocyanic acid.
Step-by-step explanation:
Table 17.5.2 and Table 17.7.2 provide the values of pK and pKa for selected weak bases and their conjugate acids, respectively. In addition to these tables, there are also more extensive sets of data provided in Tables E1 and E2. Smaller values of pKa correspond to larger acid ionization constants, indicating stronger acids. For example, nitrous acid (HNO₂) with a pKa of 3.25 is about a million times stronger than hydrocyanic acid (HCN) with a pKa of 9.21.