# pH Calculator

Given pH Calculator is helpful to know the pH value of a chemical solution. Just provide the input i.e concentration and chemical formula and hit on the calculate button to get the pH scale as output along with an explanation.

**Ex:** 0.03, 0.45, 0.34 or 0.0034

### How to Calculate pH?

Go through the simple and easy guidelines on how to measure pH value.

- Know the concentration of hydrogen ions in the solution.
- Calculate the pH by using the pH to H
^{+}formula i.e pH=-log[H^{+}] - You can also calculate the pOH and the concentration of hydroxide ions.
- The other way to know pOH is subtract 14 from pH value.

**Formula:**

pH is stated as the negative of the base ten logarithm of the molar concentration of hydrogen ions available in the solution.

pH=-log([H^{+}])

pOH=-log([OH^{-}])

Relationship between pH and pOH is

pH+pOH=14

**Example:**

**Question1: Find the pH of a 0.0025 M HCl solution?**

Answer:

Given that

Hydronium concentration is 0.0025 M

pH=-log([H^{+}])

pH=-log(0.0025)=-(-2.60)=2.60

pH of HCL solution is 2.60

**Question2: What is the pOH of a solution that has a hydroxide ion concentration of 4.82 x 10 ^{-5} M?**

Answer:

Given that

OH-=4.82 x 10^{-5}

pOH=-log([OH^{-}])

pOH=-log(4.82 x 10^{-5})=- ( - 4.32) = 4.32

pOH value is 4.32

If you would like to learn more about the other mathematical calculator that gives instant results, stay tuned to Chemistrycalc.Com

### FAQ’s on pH Calculator

**1. What is pH and its formula?**

pH is to measure the amount of hydrogen ion activity (H+) in the chemical solution, and its acidity or alkalinity. Its formula is pH=-log([H^{+}]).

**2. How do you calculate pH and pOH?**

To calculate the pH concentration, take the negative logarithm of Hydronium ion concentration. pOH is obtained by subtracting pH from 14.

**3. What is the pH of pure water?**

The pH of pure water is 7, the negative logarithm of 1 X 10^-7.

**4. Why does pH and POH equal 14?**

pH and pOH are the log concentrations of hydroxide ions and protons. Which says that the sum of pH and pOH will become 14.