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What is the pH scale?
pH stands for "power of hydrogen".The "H" is capitalized because it is the hydrogen element symbol.
Acidic and basic are two extremes that describe a chemical property chemical. The pH scale measures how acidic or basic a substance is.
- The pH scale ranges from 0 to 14.
- A pH less than 7 is acidic in nature.
- A pH of 7 is neutral.
- A pH greater than 7 is basic in nature.
pH decreases with an increase in temperature. This does not mean that the water becomes more acidic at higher temperatures.
A solution is considered acidic if there is an excess of hydrogen ions (H) over hydroxide ions (OH-).
(Refer to image for better understanding)
( The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution.)
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