The pH scale measures the acidity or alkalinity of a substance, ranging from 0 to 14, with values below 7 representing acidity, above 7 representing alkalinity, and 7 representing neutrality.
The pH scale that is widely accepted and used by scientists didn't actually exist until 1909. Before then scientists had to rely on using adjectives to describe the acidity or basicity of a substance ...
The pH value of any solution is a number which simply represents the acidity and basicity of that solution. It is important in everyday life as solutions are considered acidic, neutral or basic ...
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