The acidity and alkalinity of a compound is represented on a scale known as:

pH scale

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Hess scale

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Kelvin Scale

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none of these

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Solution

The correct option is C pH scale
pH scale is the measure of acidity or alkalinity of a solution. It is the negative log of the activity of the hydrogen ion in an aqueous solution. Solution with pH less than seven are said to be acidic and solutions with pH greater than 7 are basic or alkaline. Pure water has pH of 7 so it is neutral in nature.

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