The negative logarithm of the hydrogen ion concentration of a solution is

The negative logarithm of the hydrogen ion concentration of a solution is known as the pH. The pH scale is used to specify the acidity or basicity of an aqueous solution.

Here are the steps to calculate it:

1. Determine the concentration of hydrogen ions in the solution. This is usually given in moles per liter (M).

2. Take the logarithm (base 10) of this concentration. You can use a scientific calculator to do this.

3. Multiply the result by -1. This is because the pH is defined as the negative logarithm of the hydrogen ion concentration.

The resulting number is the pH of the solution. A pH less than 7 indicates an acidic solution, a pH of 7 indicates a neutral solution, and a pH greater than 7 indicates a basic (or alkaline) solution.