pKb Calculator
⚖ Acids, Bases & Equilibrium. Use the pKb formula to find pkb, kb: pick the value you want, type the others, and the answer updates as you go.
pKb4.7496
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| pKb | no unit |
| Kb | no unit |
Worked example
Find the pkb when Kb = 1.78 × 10⁻⁵.
Using pKb = -log Kb: pKb = 4.7496.
Frequently asked questions
What is the formula for pKb?
pKb = -log Kb.
What do the letters stand for, and what units are used?
pKb, Kb.
How do you calculate pkb?
Put the values into pKb = -log Kb. For example, with Kb = 1.78 × 10⁻⁵, pkb = 4.7496.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (pkb, kb) and fill in the others: it rearranges the formula for you.
