CBSENEETJEEClass 10
What is the pH scale?
Answer
The pH scale is a numerical scale from 0 to 14 used to measure how acidic or basic an aqueous solution is.
The working
Range
The scale runs from 0 to 14, with 7 as the neutral point at 25 °C.
Reading values
pH below 7 indicates an acidic solution, exactly 7 indicates neutral, and above 7 indicates a basic solution.
Logarithmic nature
Each whole-number change in pH represents a tenfold change in hydrogen ion concentration.
Everyday use
It helps compare acidity of common substances, such as lemon juice being acidic and soap solution being basic.
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