What is mean by pH?
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pH is a measure of the acidity or alkalinity of water soluble substances. 'pH' stands for potential of Hydrogen. A pH scale consists of numbers from 1 to 14, with 7 as the neutral point. Values below 7 indicate acidity, and the acidity increases while the numbers decrease, with 1 being the most acidic. Values above 7 indicate alkalinity, and the alkalinity increases while the numbers increase, with 14 being the most alkaline. The pH scale was invented by S
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