Ph Notes: Definitions & Explanations PDF Download
Study Ph lecture notes PDF with college chemistry definitions and explanation to study What is Ph?. Study ph explanation with college chemistry terms to review chemistry course for online degree programs.
Ph Definition:
Hydrogen ion concentration expressed as a logarithm to base 10 is called pH.
Cambridge International AS and A Level Chemistry by Ryan Lawrie, Roger Norris
Ph Notes:
In chemistry, pH is a scale which is used to understand how acidic or basic a water-based solution is. Acidic solutions have a lower pH, while basic solutions have a higher pH. At room temperature (25 °C), pure water is neither acidic nor basic and has a pH of 7. The pH scale is logarithmic and approximates the negative of the base 10 logarithm of the molar concentration (measured in units of moles per liter) of hydrogen ions in a solution. it is the negative of the base 10 logarithm of the activity of the hydrogen ion. At 25 °C, solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are basic. The neutral value of the pH depends on the temperature, being lower than 7 if the temperature increases. The pH value can be less than 0 for very strong acids, or greater than 14 for very strong bases.
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