To calculate the ph of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The ph is then calculated using the expression: ph = – log [h3o+].
How to Find Ph?
Finding the pH of a solution can be a tricky task, but it is an important one to understand in order to understand the chemistry of a solution. In general, pH is a measure of the acidity or basicity of a solution and is measured on a scale from 0 to 14. Solutions with a pH of 7 are considered neutral, while solutions with a pH below 7 are acidic and solutions with a pH above 7 are basic.
The first step in finding the pH of a solution is to determine the concentration of hydrogen ions (H+) in the solution. This can be done using a pH meter. This device passes an electric current through the sample solution and measures the amount of current blocked by the hydrogen ions in the solution. The greater the concentration of hydrogen ions, the lower the pH.
Another way to measure the pH of a solution is to use an indicator. Indicators are substances that change color in the presence of hydrogen ions. The most commonly used indicator is litmus paper, which turns blue in the presence of a basic solution and red in the sight of an acidic solution.
Finally, pH can also be determined by titration. This process involves slowly adding a known concentration of acid or base to a