The formula to calculate K_{b} from the K_{a} value is –

∴ K_{b} = K_{w}/K_{a}

Where the value of K_{w} is fixed at 25^{°}C, i.e., room temperature. K_{w} = 1.0 x 10^{-14}.

Kb from Ka calculator

Kb from Ka Calculator

Kb value =

x 10 ^

How to use K_{b} from the K_{a} calculator?

Note: This calculator uses scientific notation, as most of the numerical for K_{a} and K_{b} calculations are given in the scientific form.

⇒ Scientific notation consists coefficient and an exponent. For example – If the scientific notation is 2.5 × 10^{-5}, then the coefficient is 2.5 and the exponent is -5.

Using the above calculator you can easily calculate the K_{b} value from K_{w} and K_{a} values.

There are two input fields for entering the K_{a} value, one for the coefficient and one for the exponent.

The K_{w} value is displayed as read-only and cannot be changed, with a coefficient of 1.0 and an exponent(10 to the power) is -14.

To use the calculator, enter a coefficient and exponent for the K_{a} value in the corresponding input fields.

Click the “Calculate” button to perform the calculation. The result for the K_{b} value, including the coefficient and exponent, will be displayed in the “Result” section.

If you want to clear the fields and start a new calculation, click the “Refresh” button to clear the input fields and the result display.

How to calculate K_{b} from K_{a}?

K_{a} and K_{b} can be interconverted using a chemical entity called the water dissociation constant (K_{w}).

The relationship between K_{b} and K_{a} is –

⇒ K_{a}. K_{b} = K_{w} [∴ K_{w} = 1.0 x 10^{-14}]

If the value of K_{a} is known, we can easily determine the value of K_{b} by making K_{b} the subject of the formula.

Example of calculating K_{b} value using “K_{b} from K_{a} calculator”

Let’s say we have given the value of K_{a} and we need to calculate the K_{b} value.

For example – If K_{a} = 1.8 x 10^{-5}, what is the K_{b} value?

As we know, the formula to find K_{b} from K_{a} is –

Vishal Goyal is the founder of Topblogtenz, a comprehensive resource for students seeking guidance and support in their chemistry studies. He holds a degree in B.Tech (Chemical Engineering) and has four years of experience as a chemistry tutor. The team at Topblogtenz includes experts like experienced researchers, professors, and educators, with the goal of making complex subjects like chemistry accessible and understandable for all. A passion for sharing knowledge and a love for chemistry and science drives the team behind the website. Let's connect through LinkedIn: https://www.linkedin.com/in/vishal-goyal-2926a122b/

Topblogtenz is a website dedicated to providing informative and engaging content related to the field of chemistry and science. We aim to make complex subjects, like chemistry, approachable and enjoyable for everyone.