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30 wrz 2020 · Here is a table of pH values of common chemicals. You’ll see charts that give slightly different pH values for some chemicals. There’s usually a pH range for a substance. For example, fruit acidity depends on soil, temperature, ripeness, and other factors. The pH of a soap depends on other ingredients in its formula.
The pH scale is a convenient way to represent the acidity or basicity of a solution. We can calculate the pH of a solution by taking the negative logarithm of the hydronium ion concentration, or pH = -log[H₃O⁺].
In this video we will learn about the pH scale and how it works.
Test the pH of things like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Visualize the relative number of hydroxide ions and hydronium ions in solution. Switch between logarithmic and linear scales.
In this video, we will learn about the pH scale, how it’s defined, and the pHs of common substances. Generally, when we’re talking about pH, we’re talking about aqueous solutions, solutions where the solvent is water, H2O. Pure water at 25 degrees Celsius has a pH of seven.
Explore the pH of different substances and learn about acids, bases, and neutral compounds with this interactive simulation.
Figure \(\PageIndex{1}\) depicts the pH scale with common solutions and where they are on the scale. Figure \(\PageIndex{1}\): The pH and pOH scales represent concentrations of [H 3 O + ] and OH − , respectively.
