Question

Is the $\mathrm{pH}$ Scale Logarithmic?

Answer 1

The $\mathrm{pH}$ scale measures the molar concentration of hydrogen (acid) or hydroxide (base) ions in a solution using a logarithmic scale (negative base two $10$ logarithms) (moles per liter). Since the number of ions is so large that it is difficult to compare one number to another, the logarithm is used.

$\mathrm{pH}$ scale: The pH scale is a standard way to determine whether a substance is acidic or alkaline.

1. The$\mathrm{pH}$ scale has$0$ to $14$ possible values. Acidic substances have a $\mathrm{pH}$ value of$1\mathrm{to}7$, $1$ being the most acidic.
2. Alkaline or basic substances have a $\mathrm{pH}$ value between$7$ and$14$, with$7$ being the most basic point on the $\mathrm{pH}$scale.
3. A $\mathrm{pH}$of$7$ would be $\mathrm{pH}$ of a completely neutral substance.
4. The H in pH indicates the concentration of the solution's protons.
5. The pH formula is$\mathrm{pH}=-\log \left[{\mathrm{H}}^{+}\right]$.
6. Typical pH values ​​for solutions at different temperatures.

Diagram:

Hence, the $\mathrm{pH}$ Scale is Logarithmic.