Question

what is pH value please tell me ​

Answer 1

In chemistry, pH is a scale used to specify how acidic or basic a water-based solution is. Acidic solutions have a lower pH(<7), while basic solutions have a higher pH(>7). At room temperature, pure water is neither acidic nor basic and has a pH of 7.

Answer 2

A measure of acidity or alkalinity of water soluble substances (pH stands for 'potential of Hydrogen'). A pH value is a number from 1 to 14, with 7 as the middle (neutral) point. Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic.