H+ from pH Calculator (Easily calculate H3O+ concentration when pH value given)
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
Step by Step Solution:
To determine [H⁺], you can use the formula given below:
⇒ [H⁺] = 10-pH
⇒ pH =
Substitute the pH value into the formula:
∴ [H⁺] = 10-
∴ [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
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.
∴ 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.
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/