H+ from pH Calculator (Easily calculate H3O+ concentration when pH value given)

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The formula to calculate H+ or H3O+ from the pH value is –

∴ [H+] = 10-pH

  • Where [H+] represents the concentration of hydrogen ions. Its unit is moles/liter or M.


pH to H+ calculator

pH to H+ Calculator

[H+] =

How to use pH to H+ calculator?

Using the above calculator you can easily calculate the H+ or [H3O]+ concentration from the pH value.

  • Enter a pH value in the input field labeled “pH value =”.
  • Click the “Calculate” button.
  • The result [H+] will be displayed in the “result” section with Step by Step solution.

How to calculate H+ from pH?

The pH of a solution is related to [H+] by the formula given in the equation.

∴ pH = -log10[H+]

Above equation can be transferred by taking antilog –

∴ [H+] = 10-pH

formula to calculate H+ from pH value

Example of calculating H+ value using “pH to H+ calculator”

Let’s say we have given the value of pH and we need to calculate the H+ value.

For example – If the pH value = 1.60, what is the [H+] value?

As we know, the formula to find H+ from pH is –

⇒ [H+] = 10-pH

So, just put the value of pH in the respective field and then press calculate button.

example on using ph to H+ calculator

∴ So, the value for [H+] or [H3O]+ concentration for the given pH (1.60) is 0.025 M approx.

Numericals based on “Converting pH value to H+

What is the hydrogen ion (H+) concentration of a solution with a pH of 5.2?

The formula to calculate H+ from pH is –

⇒ [H+] = 10-pH

We have given, the pH value which is 5.2.

∴ [H+] = 10-5.2

= 0.0000063 M

So, the hydrogen ion (H+) concentration of a solution with a pH of 5.2 is 0.0000063 M. (Use our pH to H+ calculator to verify this).

The pH of a nitric acid solution is 2.49, How can you determine its Hydrogen ion concentration (H+)?

Nitric acid (HNO3) is a strong monoprotic acid. It completely ionizes to yield H+ and NO3- ions in an aqueous solution.

We can use [H+] = 10-pH to determine hydrogen ion concentration as pH is already given.

∴ [H+] = 10-2.49

= 0.00323 M or mol/L.

So, the hydrogen ion concentration (H+) is 0.00323 M for a pH value (2.49) of nitric acid solution.

Also, check:

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About the author

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/

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