Question

the information about pH scales

Answer 1

A measure of acidity or alkalinity of water soluble substances. 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..

Answer 2

pH full form is power of hydrogen value of it is 1to 14 if it lies between 1to7 is acidic and if it lies between 7to4 is basic if it is 7 it is neutral. example for neutral is water and example for acid is HCl and example for base is H2SO4