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

How to use the “H⁺ to pH” calculator?

Using the above calculator you can easily calculate the pH value of strong acid from H⁺ concentration.

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

How to calculate pH from H⁺?

The pH of a solution is related to [H⁺] or [H₃O]⁺ by the formula given in the equation.

∴ pH = -log₁₀[H⁺]

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

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

For example – Find the pH of a 0.005 M HCl solution.

We know that HCl is a strong acid that completely ionizes to release H⁺ and Cl^– ions in water.

⇒ So the concentration of HCl solution = concentration of H⁺ ions released in the solution. As the concentration or molarity of the HCl solution is given in the question statement i.e., 0.005 M.

∴ So we know [H⁺] = 0.005 mol/L.

So, just put the value of [H⁺] in the respective field and then press calculate button.

∴ So, the value for pH for the given [H⁺] is 2.30 approx.

Example 2: Let’s say the given hydrogen concentration [H⁺] is 2.5 x 10^-4. Now calculate the pH for this value using a calculator.

In this problem, [H⁺] is given in scientific notation which is 2.5 x 10^-4, this value can also be written as “2.5e-4”.

Just put this value of [H⁺] in the calculator field, and press calculates button to get step by step solution.

So, for the hydrogen concentration of 2.5 x 10^-4, the pH will be 3.60 approx.

Also, check:

• pH to H⁺ calculator